EP3727304A1 - Multi-step process for dyeing keratin fibres using indigo-producing plant powder, and acidic treatment comprising a particular dye - Google Patents
Multi-step process for dyeing keratin fibres using indigo-producing plant powder, and acidic treatment comprising a particular dyeInfo
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- EP3727304A1 EP3727304A1 EP18830489.3A EP18830489A EP3727304A1 EP 3727304 A1 EP3727304 A1 EP 3727304A1 EP 18830489 A EP18830489 A EP 18830489A EP 3727304 A1 EP3727304 A1 EP 3727304A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
- A61Q5/06—Preparations for styling the hair, e.g. by temporary shaping or colouring
- A61Q5/065—Preparations for temporary colouring the hair, e.g. direct dyes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/35—Ketones, e.g. benzophenone
- A61K8/355—Quinones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/36—Carboxylic acids; Salts or anhydrides thereof
- A61K8/368—Carboxylic acids; Salts or anhydrides thereof with carboxyl groups directly bound to carbon atoms of aromatic rings
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/4973—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom
- A61K8/498—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom having 6-membered rings or their condensed derivatives, e.g. coumarin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/60—Sugars; Derivatives thereof
- A61K8/602—Glycosides, e.g. rutin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/96—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
- A61K8/97—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
- A61K8/9783—Angiosperms [Magnoliophyta]
- A61K8/9789—Magnoliopsida [dicotyledons]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
- A61K2800/88—Two- or multipart kits
- A61K2800/884—Sequential application
Definitions
- the invention relates to (I) a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, in which said fibres are treated in several steps, comprising at least one step E1 ) of dyeing said fibres using a cosmetic dye composition A comprising i) indigo- producing plant powder and/or an indigo-producing plant dye extract and optionally henna, ii) at least one step E2) of post-treatment of said fibres using an aqueous cosmetic composition B whose pH is less than 7, comprising one or more particular natural dyes iii), other than henna and indigoids, and iv) one or more acidifying agents; composition A preferably being applied first to the keratin fibres; and composition B being applied to the keratin fibres after application of composition A, and to (II) the use of an acidic aqueous composition B, comprising one or more particular natural dyes, for accelerating the stabilization over time (on the day of performing the dyeing process
- colourings produced using indigo and optionally henna are generally evolutive over time in terms of colour: they have a characteristic yellow/green colouring on the day of application (i.e. on the day of dyeing).
- This relatively unaesthetic "raw" colour which is little appreciated by dye users, changes towards the desired colourings after a few hours (48 hours to 1 week) and may change in colour over time (appearance of violet-red tints generally after 2 to 3 weeks).
- This colouring to obtain an aesthetic colouring on the day of application (for example brown free of yellow/green tints) which changes little over time (no colour change) while at the same time respecting the integrity of the keratin fibres.
- the first known as oxidation dyeing or permanent dyeing, consists in using one or more oxidation dye precursors, more particularly one or more oxidation bases optionally combined with one or more couplers.
- oxidation bases are selected from ortho- or para-phenylenediamines, ortho- or para-aminophenols, and heterocyclic compounds. These oxidation bases are colourless or weakly coloured compounds, which, when combined with oxidizing products, can give rise via a process of oxidative condensation to coloured species, which remain trapped within the fibre.
- the shades obtained with these oxidation bases are often varied by combining them with one or more couplers, these couplers being chosen in particular from aromatic meta-diamines, meta-aminophenols, meta-diphenols and certain heterocyclic compounds, such as indole compounds.
- the second dyeing method comprises the application of direct dyes, which are coloured and colouring molecules that have affinity for fibres. Given the nature of the molecules used, they tend rather to remain on the surface of the fibre and penetrate relatively little into the fibre, when compared with the small molecules of oxidation dye precursors.
- the main advantages of this type of dyeing are that it does not require any oxidizing agent, which limits the degradation of the fibres, and that it does not use any dyes that have particular reactivity, resulting in limitation of the intolerance risks.
- the first hair dyes were semi-permanent.
- One of the most widely-known natural dyes is indigo (see Ullmann's Encyclopedia of Industrial Chemistry, "Hair preparation", point 5.2.3, 2006 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim; 10.1002/14356007.a12 571.pub2).
- Indigo continues to be used in female beauty enhancement for dyeing the hair or the nails, or for dyeing fabrics (jeans), leather, silk, wool, etc.
- Indigo [482-89-3] is a natural blue dye, and its isomer indirubin is red.
- Their empirical formula is: C16H10N2O2; and their chemical structures are the following:
- isatin may give indigotin or indirubin (Maugard et al., 2001 ).
- the presence of these two isomers accounts for the violet colour of indigo that is more or less pronounced as a function of the respective proportion in the hair of the two isomers formed in the hair (in particular violet to purple if the amount of indirubin increases).
- Indigo is derived from indican and may be prepared from various plants known as indigo- producing plants such as Indigofera tinctoria, Indigo suffruticosa, Polygonum tinctorium etc. (see Kirk-Othmer Encyclopedia of Chemical Technology, updated on 17/04/2009, DOI: 10.1002/0471238961 .0425051903150618. a01.pub2).
- the indigo-producing plants are generally chopped and soaked in hot water, heated, fermented and oxidized in the open air to liberate the purple-blue coloured indigo (see Chem. Rev. 201 1 , 111 , 2537-2561 , pages 2537- 2561 ).
- Indigo is the result of the hydrolysis and then oxidization of indican (glycosyl precursor).
- the problem is that dyeing using the indigo leaf is difficult because the dyeing kinetics in the keratin fibres is variable. Furthermore, the dyeing process is unstable. Indigo theoretically affords a blue colouring on grey hair, and a "cold" colour of ash type. However, the dyeing process using indigo is difficult to control due to the competing reaction for the formation of indirubin (which also involves an oxidation step with intermediate formation of yellow-coloured isatin) giving yellow to dark purple tints complementary to chestnut-brown hair over time.
- the colourings resulting from mixtures of indigo and henna are thus generally evolutive over time in terms of colour, they have a characteristic yellow/green colour on the day of dyeing (relatively unaesthetic "raw" colour, which dye users appreciate little) which changes towards the desired colourings after a few hours (48 hours to 1 week) and may change colour over time (appearance of violet-red tints generally after 2 to 3 weeks).
- This colouring to obtain an aesthetic colouring on the day of application (for example brown free of yellow/green tints) which changes little over time (no colour change).
- indigo molecule is insoluble in water, and so when a mixture of indigo and henna, which itself is water-soluble, is used, this leads to substantial inhomogeneities in colour buildup between the root and the end (selectivity).
- a cosmetic dye composition A comprising indigo-producing plant powder and/or extract i) and optionally henna ii);
- step E2 of treating said fibres using an aqueous cosmetic composition B whose pH is less than 7 and comprising one or more natural dyes iii) chosen from:
- anthraquinones preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C, laccaic acid D and/or kermesic acid;
- iii-ii) betalains preferably betanin
- iii-iii) anthocyanidins also known as anthocyanides or anthocyanidols
- formula (Vg) which include at least three hydroxyl groups, preferably chosen from cyanidin, delphinidin, pelargonin, malvidin, peonidin and petunidin, and mixtures thereof;
- iii-v) naphthoquinones comprising at least two hydroxyl groups, preferably at least three hydroxyl groups, preferably chosen from alkanine (also known as Orcanette) and/or shikokine;
- composition A is applied first to the keratin fibres; and that composition B is applied to the keratin fibres after the application of composition A;
- composition B preferably involving at least one rinsing step and/or one washing step between the dyeing step using composition A and the treatment step involving the application of composition B.
- the dyeing process according to the invention involves a first step of dyeing the keratin fibres via the application of a dye composition A to the fibres, comprising indigo-producing plant powder and/or extract and optionally henna, followed by a step of treating with an aqueous composition B whose pH is less than 7, comprising one or more particular natural dyes as defined previously and one or more acidifying agents, i.e. in post-treatment.
- a dye composition A to the fibres, comprising indigo-producing plant powder and/or extract and optionally henna
- an aqueous composition B whose pH is less than 7, comprising one or more particular natural dyes as defined previously and one or more acidifying agents, i.e. in post-treatment.
- the dyeing process according to the invention involves a step of treating with an aqueous composition B whose pH is less than 7, comprising one or more particular natural dyes as defined previously and one or more acidifying agents, followed by a step of dyeing the keratin fibres via the application of a dye composition A to the fibres, comprising indigo-producing plant powder and/or extract and optionally henna.
- a subject of the invention is also the use of an aqueous composition B whose pH is less than 7, comprising one or more particular natural dyes iii), as defined previously, and iv) one or more acidifying agents, to accelerate the stabilization of the colour of fibres dyed with indigo, and optionally henna, over time and to improve the colour intensity and/or the colour buildup and/or the colour persistence.
- an aqueous composition B whose pH is less than 7, comprising one or more particular natural dyes iii), as defined previously, and iv) one or more acidifying agents, to accelerate the stabilization of the colour of fibres dyed with indigo, and optionally henna, over time and to improve the colour intensity and/or the colour buildup and/or the colour persistence.
- the process for dyeing keratin fibres according to the invention has the advantage of dyeing said fibres, especially human keratin fibres, in particular the hair, with natural dyeing results without any yellow/green tints, and/or powerful, chromatic colourings, which are resistant to washing, perspiration, sebum and light, and which are moreover long-lasting, without impairment of the fibre. Furthermore, the colourings obtained using the process are uniform from the root to the end of a fibre (little colour selectivity). The treated keratin fibres show very good cosmetic properties; in particular, their integrity is respected and they have a great level of sheen.
- compositions used according to the invention are cosmetic compositions, i.e. they are cosmetically acceptable and are thus suitable for use for application to keratin fibres, especially for application to human keratin fibres such as the hair.
- composition A is obtained by mixing, just before use, indigo-producing plant powder i) and optionally henna ii) with an aqueous composition to obtain a ready-to-use dye composition A, preferably in the form of a poultice.
- composition A is an aqueous composition. i) indigo-producing plant powder and/or extract
- the dye composition A according to the invention comprises indigo-producing plant powder and/or extract.
- indigo-producing plant extract means "a dye extract from an indigo-producing plant”).
- Indigofera such as Indigofera tinctoria, Indigo suffruticosa, Indigofera articulata,
- Isatis such as Isatis tinctoria
- Persicaria such as Polygonum tinctorium (Persicaria tinctoria)
- Calanthe such as Calanthe veratrifolia
- Baphicacanthus such as Baphicacanthus cusia.
- the indigo-producing plant is of the genus Indigofera and more particularly is Indigofera tinctoria, suffruticosa or argentea, preferably Indigofera tinctoria.
- Use may be made of all or part (in particular the leaves especially for Indigofera tinctoria ) of the indigo-producing plant.
- the indigo-producing plant powder may be screened to obtain particles with upper limit sizes corresponding to the orifices or mesh sizes of the screen particularly between 35 and 80 mesh (US).
- the size of the indigo-producing plant powder particles is fine.
- a particle size of less than or equal to 500 pm is more particularly intended.
- the powder is constituted of fine particles with sizes inclusively between 50 and 300 pm and more particularly between 10 and 200 pm.
- said indigo-producing plant particles preferentially have a moisture content of between 0 and 10% by weight relative to the total weight of the powders.
- the indigo-producing plant extract according to the invention is a product of maceration in solvents, generally organic solvents, of all or part (in particular the leaves especially for Indigofera tinctoria ) of the indigo-producing plant.
- the indigo-producing plant powder according to the invention is a natural product originating from indigo-producing plants, reduced by grinding or other mechanical means into fine particles.
- an indigo-producing plant powder is used.
- composition A is in the form of a solid, preferably pulverulent, preferably anhydrous composition.
- the indigo-producing plant powder is preferably present in composition A in a content ranging from 10% to 99% by weight, relative to the total weight of composition A, more particularly ranging from 20% to 90% by weight, preferentially ranging from 20% to 80% by weight.
- composition A is obtained by mixing just before use (i.e. extemporaneously) the indigo-producing plant powder and/or extract i) and optionally henna ii) with water or with an aqueous composition to obtain a ready- to-use dye composition A, preferably in the form of a poultice.
- the indigo-producing plant powder and/or extract is present in composition A preferably in a content ranging from 0.5% to 50% by weight, relative to the total weight of composition A, when composition A is aqueous, more particularly ranging from 1 % to 40% by weight, preferentially ranging from 5% to 30% by weight.
- composition A when it is ready-to-use, comprises water.
- ready-to-use refers to a composition that is ready to be applied directly to the keratin fibres.
- composition A of the invention may also contain one or more surfactants, preferably anionic or nonionic surfactants.
- the ready-to-use composition A applied to the keratin fibres according to the process of the invention is preferably obtained from mixing between the indigo-producing plant powder and/or extract i) in compact or loose form, optionally henna ii), and an aqueous composition, preferably water.
- the ready-to-use composition A applied to the keratin fibres according to the process of the invention is in the form of a poultice.
- the ready-to-use dye composition A comprises a water content ranging from 10% to 99% by weight, more particularly from 20% to 98% by weight and better still from 40% to 95% by weight relative to the weight of ready-to-use composition A.
- the indigo-producing plant powder or extract i), optionally the henna ii) and optionally the additional compounds as described previously are mixed with an aqueous composition comprising water, to obtain a poultice of creamy and pleasant consistency corresponding to the ready-to-use composition A.
- an aqueous composition comprising water
- the dye composition A) according to the invention preferably comprises henna ii).
- henna refers to a henna plant powder and/or a henna plant dye extract, preferably from a henna plant such as Lawsonia alba or Lawsonia inermis.
- the henna plant powder and/or dye extract especially comprises lawsone and/or a glucosylated precursor thereof.
- the henna used according to the present invention is in powder form.
- the "henna powder” and the indigo-producing plant powder are different from an extract.
- an extract is a product of maceration in solvents, generally organic solvents
- the powder according to the invention is a natural product originating from henna or indigo-producing plants, reduced by grinding or other mechanical means, into fine particles.
- the henna used in the invention is preferably red henna ( Lawsonia inermis, alba). Lawsone [83-72-7] (Cl Natural Orange 6; Cl 75420), also known as isojuglone, may be found in henna shrubs ( Lawsonia alba, Lawsonia inermis).
- the henna is in powder form.
- the henna powder may be screened to obtain particles with upper limit sizes corresponding to the orifices or mesh sizes of the screen particularly between 35 and 80 mesh (US). According to a particular mode of the invention, the size of the henna powder particles is fine. According to the invention, a particle size of less than or equal to 500 pm is more particularly intended.
- the powder is constituted of fine particles with sizes inclusively between 10 and 300 pm and more particularly between 50 and 250 pm. It is understood that said henna particles preferentially have a moisture content of between 0 and 10% by weight, relative to the total weight of the powders.
- said henna particles are derived from henna leaves.
- composition A is in the form of a solid, preferably pulverulent, preferably anhydrous composition.
- henna is preferably present in composition A in a content ranging from 5% to 99% by weight, relative to the total weight of composition A, more particularly ranging from 10% to 60% by weight, preferentially ranging from 15% to 40% by weight, in particular when composition A is anhydrous.
- composition A is obtained by mixing just before use (i.e. extemporaneously) the indigo- producing plant powder i) and henna ii) (when it is present) with water or with an aqueous composition to obtain a ready-to-use dye composition A, preferably in the form of a poultice.
- henna is present in composition A preferably in a content ranging from 0.1 % to 30% by weight, relative to the total weight of composition A, when composition A is aqueous, more particularly ranging from 0.15% to 20% by weight, preferentially ranging from 0.2% to 10% by weight.
- the dyeing process according to the invention uses henna
- the indigo- producing plant powder and/or extract i) and henna ii) are present in composition A in a i)/ii) weight ratio ranging from 0.1 to 95, preferably from 0.5 to 50 and better still from 1 to 10.
- Composition B is a composition of Composition B:
- Composition B used according to the invention is an aqueous composition whose pH is less than 7.
- the pH of composition B is less than 6, and preferably less than 5.0.
- the pH of composition B used according to the invention is inclusively between 0.5 and 5, more particularly between 0.5 and 4.5, preferably between 2 and 4.
- Composition B comprises iv) one or more acidifying agents, preferably chosen from mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, alpha-hydroxycarboxylic acids (AHA) such as citric acid and lactic acid; and mixtures thereof.
- acidifying agents preferably chosen from mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, alpha-hydroxycarboxylic acids (AHA) such as citric acid and lactic acid; and mixtures thereof.
- composition B may be adjusted to the desired value by means of acidifying agents as described above, or alternatively using standard buffer systems.
- composition (A) comprises at least one acid, preferably chosen from mineral acids, which are preferably chosen from hydrochloric acid, phosphoric acid and sulfuric acid and the conjugate salts thereof, in particular phosphoric acid and the salts thereof.
- composition (B) comprises an inorganic buffer system comprising at least one mineral (inorganic) acid and the conjugate base thereof, i.e. the inorganic salt of said inorganic acid.
- composition (B) comprises an inorganic buffer system comprising a mixture of at least phosphoric acid (H3PO4) and at least one inorganic phosphate salt, in particular chosen from potassium dihydrogen phosphate KH2PO4, sodium dihydrogen phosphate NaH2PC>4, dipotassium hydrogen phosphate K2HPO4, disodium hydrogen phosphate Na2HPC>4, potassium hydrogen phosphate K3PO4 and sodium phosphate Na3PC>4, and mixtures thereof.
- H3PO4 phosphoric acid
- the acidifying agent(s) iv) as defined previously preferably represent from 0.001 % to 15% by weight relative to the weight of composition B, more particularly, from 0.005% to 10% by weight relative to the weight of composition B, better still from 0.5% to 5%.
- the acidifying agent(s) iii) are present in the aqueous composition B in a concentration inclusively between 0.1 M and 1 M, such as 0.5 M.
- composition B Natural dyes iii) present in composition B:
- Composition B used according to the invention comprises one or more natural dyes iii) chosen from:
- anthraquinones preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid and/or kermesic acid; iii-ii) betalains, preferably betanin;
- anthocyanidins also known as anthocyanides, or anthocyanidols
- formula (Vg) which include at least three hydroxyl groups, preferably chosen from cyanidin, delphinidin, pelargonin, malvidin, peonidin and petunidin, and mixtures thereof;
- iii-v) naphthoquinones comprising at least two hydroxyl groups, preferably at least three hydroxyl groups, preferably chosen from alkanine (also known as Orcanette) and/or shikokine;
- the natural dye(s) iii) are chosen from anthraquinones comprising at least two hydroxyl groups, preferably chosen from alizarin, xanthopurpurin, rubiadin, lucidin, munjistin, anthragallol, purpurin, pseudopurpurin and morindone, and mixtures thereof, preferably at least three hydroxyl groups, preferably chosen from anthragallol, purpurin, pseudopurpurin, morindone and munjistin, and mixtures thereof.
- the anthraquinone(s) are dyes that absorb in the red region.
- the natural dye(s) iii) are compounds comprising at least one carboxylic acid function.
- the natural dyes iii) are preferably chosen from:
- anthraquinones preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C, laccaic acid D, pseudopurpurin, munjistin and/or kermesic acid;
- iii-ii) betalains preferably betanin
- the natural dye(s) iii) are chosen from: iii-iii) anthocyanidins (also known as anthocyanides, or anthocyanidols) preferably of formula (Vg) which include at least three hydroxyl groups, preferably chosen from cyanidin, delphinidin, pelargonin, malvidin, peonidin and petunidin, and mixtures thereof.
- the natural dye(s) according to the invention may or may not be salified. They may also be in aglycone form (without bonded sugars) or in the form of glycosylated compounds.
- glycosyl radical means a radical derived from a monosaccharide or polysaccharide.
- the natural dyes according to the invention may be in the form of powders or liquids.
- the natural dyes of the invention are in the form of powders.
- the natural dyes used according to the invention in composition B have an absorption wavelength lTM 3c of between 625 and 750 nm or between 300 and 470 nm, and better still between 625 and 750 nm.
- the dyes of the invention are dyes which absorb in the red range, i.e. at an absorption wavelength which is within the range particularly between 300 and 470 nm, or in the violet range between 625 and 750 nm of red-orange, preferably reds.
- the natural dye(s) iii) are anthraquinones, preferably comprising at least one carboxylic acid function, preferably chosen from those of formula (A1) below, comprising at least one carboxylic acid function:
- R 1 and R 8 which may be identical or different, represent a hydrogen atom, a hydroxyl group or an alkyl group such as methyl;
- R 2 represents a hydrogen atom or a hydroxyl group, carboxyl group -C(0)OH or carboxylate group -C(0)0 , Q + with Q + representing an alkali metal or alkaline-earth metal such as potassium or calcium;
- R 3 represents i) a hydrogen atom, ii) a hydroxyl group or iii) an optionally substituted aryl group, preferably a phenyl group optionally substituted with one or more groups chosen from a) hydroxyl, b) amino, c) (Ci-C 6 )alkyl optionally substituted with one or more groups chosen from hydroxyl, carboxyl and (Ci-C4)alkylcarbonylamino; • R 4 represents a hydrogen atom or a hydroxyl group;
- R 5 represents a hydrogen atom, or a hydroxyl, carboxyl or carboxylate group -C(0)0-, Q + with as defined previously;
- R 6 represents a hydrogen atom, a hydroxyl group, -O , Q + with Q + as defined previously, carboxyl or carboxylate group -C(0)0 , Q + with Q + as defined previously;
- R 7 represents a hydrogen atom, a hydroxyl group or a glycosyl radical, preferably glucose.
- the dyes of the invention are of formula (A1 ) and in particular, taken together or separately in which:
- R 1 represents a hydroxyl or (Ci-C 4 )alkyl group
- R 2 , R 4 and R 8 which may be identical or different, represent a hydrogen atom or a hydroxyl group
- ⁇ R 3 represents a hydrogen atom, a hydroxyl group or a phenyl group optionally substituted with one or more groups chosen from hydroxyl, carboxyl and (Ci- C4)alkylcarbonylamino such as:
- Y representing a group chosen from: -CH(NH 2 )-C(0)0H, -CH2-OH, -NH-C(0)-CH 3 ; and "— ⁇ the point of attachment to the rest of the molecule.
- R 5 and R 6 which may be identical or different, represent a hydrogen atom or a hydroxyl group, carboxyl group -C(0)0H or carboxylate group -C(0)0 , CTwith Q + representing an alkali metal or alkaline-earth metal such as potassium or calcium; and
- R 7 represents a hydrogen atom or a hydroxyl group.
- the dye(s) of the invention are of formula (A1): and in particular, taken together or separately in which:
- R 1 represents a (Ci-C 4 )alkyl group
- R 2 represents a carboxyl or carboxylate group -C(0)0 , Q + with Q + representing an alkali metal or alkaline-earth metal such as potassium or calcium;
- R 3 and R 8 represent a hydroxyl group
- ⁇ R 4 represents a hydrogen atom or a hydroxyl group, preferably hydrogen
- ⁇ R 6 represents a hydroxyl group or -O , Q + with Q + as defined previously;
- R 7 represents a hydrogen atom or a glycosyl radical such as glucose.
- the natural dyes iii) are particularly preferably chosen from anthraquinones, preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C, laccaic acid D (also known as flavokermesic acid), pseudopurpurin and munjistin, and mixtures thereof; preferably from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C and laccaic acid D, preferably laccaic acid D and/or kermesic acid.
- anthraquinones preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C, laccaic acid D (also known as flavokermesic acid), pseudopurpurin and munjistin, and mixtures thereof; preferably from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C and laccaic acid D, preferably
- the natural dyes iii) are chosen from carminic acid, laccaic acid D or kermesic acid, pseudopurpurin and munjistin, and mixtures thereof.
- the natural dye(s) iii) are chosen from betalains, preferably betanin.
- Betalains are dyes derived from beetroot.
- the natural dye(s) iii) are chosen from anthocyanidins (also known as anthocyanides, or anthocyanidols) preferably of formula (Vg) which include at least three hydroxyl groups; preferably chosen from cyanidol, cyanidin, delphinidin, pelargonin, malvidin, peonidin, petunidin, aurantinidin and luteolinidin, and mixtures thereof, heterosides thereof such as dihydroxyanthocyans (or dihydroxyanthocyanosides, or anthocyanins), oligomers and polymers thereof such as proanthocyanins; preferably anthocyanidols and especially extracts of blackcurrant, blueberry, radish, grape, red cabbage, elderberry, black carrot and black rice; preferably chosen from cyanidin, delphinidin, pelargonin, malvidin, peonidin and petunidin
- the natural dye(s) iii) are chosen from the anthocyanidins (also known as anthocyanides, or anthocyanidols) of formula (Vg) below, which preferably include at least three hydroxyl groups:
- R 1 , R 2 , R 3 , R 4 , R 10 , R 11 , R 12 , R 13 and R 14 which may be identical or different, represent a hydrogen or halogen atom or a group chosen from i) hydroxyl, ii) (Ci-C 6 )alkyl, iii) (Ci-C 6 )alkoxy, iv) (Ci-C 6 )alkylthio, v) carboxyl, vi) alkyl or alkoxycarbonyl carboxylate, vii) optionally substituted amino, viii) optionally substituted linear or branched alkenyl, ix) optionally substituted cycloalkyl, x) optionally substituted aryl, xi) a group containing one or more silicon atoms, xii) (di)((hydroxy)(Ci-C 6 )alkyl)amino, xiii) glucosyl, xiv) R
- R 6 and R 8 which may be identical or different, represent a hydrogen atom or a group chosen from a hydroxyl group, a (Ci-C 6 )alkyl group or a group R-Z-C(X)-Y- as defined previously; • or alternatively the unit (V) constitutes the polymeric unit of a polyphenol which will be linked to the other units of said polyphenol via positions 4, 6 or 8 of the chroman ring, in which case R 1 , or R 3 and R 6 form a covalent bond with the other units of said polyphenol;
- the compound of formula (Vg) being cationic and is associated with an organic or mineral anionic counterion An , such as halide.
- radicals R1 , R6, R14 and R10 represent a hydrogen atom.
- the group R-Z-C(X)-Y- of the compounds of formula (V) represents a 3,4,5- trihydroxyphenyl-1-carbonyloxy (-O-gallate).
- the radicals Ri, R 2 , R3, R 4 , R10, R11, R 12 , R 13 and R-u are chosen from a hydrogen atom and hydroxyl, glycosyloxy and alkoxy groups.
- the natural dyes iii) are anthocyanidins of formula Vg, in which the radicals R1 , R6, R14 and R10 represent a hydrogen atom.
- the other radicals R2, R3, R4, R8, R13, R12 and R11 include at least four hydroxyl and/or alkoxy functions (preferably methoxy), better still at least five hydroxyl and/or methoxy functions.
- the natural dyes iii) are anthocyanidins of formula Vg chosen from the compounds mentioned in the table below, and mixtures thereof.
- the natural dyes iii) are anthocyanidins chosen from cyanidin, delphinidin, malvidin, peonidin and petunidin, and mixtures thereof.
- the natural dyes iii) are chosen from anthocyanidins chosen from delphinidin, malvidin and petunidin, and mixtures thereof.
- the natural dye(s) iii) are chosen from carthamine.
- the natural dye(s) iii) are chosen from naphthoquinones comprising at least two hydroxyl groups, preferably at least three hydroxyl groups, preferably chosen from alkanine (also known as Orcanette) and/or shikokine.
- the natural dyes iii) used according to the present invention are polyphenols (and/or polyphenols-rich extracts).
- polyphenol means a compound comprising in its structure several hydroxyl functions borne on one or more 6-membered carbon-based aromatic rings.
- the natural dye(s) iii) used according to the present invention are polyphenols chosen from:
- anthraquinones preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C, laccaic acid D and/or kermesic acid;
- iii-ii) betalains preferably betanin
- anthocyanidins also known as anthocyanides or anthocyanidols
- formula (Vg) which include at least three hydroxyl groups, preferably chosen from cyanidin, delphinidin, pelargonin, malvidin, peonidin and petunidin, and mixtures thereof;
- the natural dye(s) iii) are compounds comprising at least one carboxylic acid function.
- the natural dyes iii) are chosen from:
- anthraquinones preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C, laccaic acid D, pseudopurpurin, munjistin and/or kermesic acid;
- iii-ii) betalains preferably betanin
- the natural dye(s) iii) are chosen from:
- anthraquinones preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C, laccaic acid D and/or kermesic acid, pseudopurpurin and munjistin;
- the natural dye(s) iii) are chosen from:
- anthraquinones preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C, laccaic acid D, pseudopurpurin, munjistin and/or kermesic acid;
- the natural dye(s) iii) are chosen from:
- anthraquinones preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C, laccaic acid D, pseudopurpurin, munjistin and/or kermesic acid.
- the “pure” natural dye(s) iii) are present in composition B in a total amount ranging from 0.05% to 25% by weight relative to the total weight of the dye composition, in particular ranging from 0.1 % to 10% by weight relative to the total weight of the dye composition, preferentially from 0.5% to 5% by weight relative to the total weight of composition B.
- the content in composition B containing the extract(s) per se is preferably between 0.1 % and 20% by weight, relative to the weight of composition B, more preferentially from 0.5% to 5% by weight.
- Compositions A and/or B as defined previously may comprise one or more organic solvents.
- organic solvents include C1-C4 lower alkanols, such as ethanol and isopropanol; polyols and polyol ethers such as 2-butoxyethanol, propylene glycol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether and monomethyl ether, hexylene glycol, and also aromatic alcohols, for instance benzyl alcohol or phenoxyethanol.
- the organic solvents are present in proportions preferably of between 0.1 % and 20% by weight approximately and even more preferentially between 0.5% and 10% by weight approximately, relative to the total weight of the composition under consideration.
- compositions A and/or B as defined previously may comprise one or more identical or different oils.
- o/T means a "fatty substance” that is liquid at room temperature (25°C) and at atmospheric pressure (760 mmHg); the viscosity at 25°C is preferably less than 1200 cps and better still less than 500 cps (defined, for example, from the Newtonian plateau determined using an ARG2 rheometer from TA Instruments equipped with a spindle with cone-plate geometry 60 mm in diameter and with an angle of 2 degrees over a shear stress range of from 0.1 Pa to 100 Pa).
- fatty substance means an organic compound that is insoluble in water at ordinary temperature (25°C) and at atmospheric pressure (760 mmHg) (solubility of less than 5%, preferably less than 1 % and even more preferentially less than 0.1 %). They bear in their structure at least one hydrocarbon-based chain comprising at least 6 carbon atoms or a sequence of at least two siloxane groups.
- the fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, for instance chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran (THF), liquid petroleum jelly or decamethylcyclopentasiloxane.
- non-silicone o/T means an oil not containing any silicon (Si) atoms and the term "silicone o/ means an oil containing at least one silicon atom.
- the oils are chosen from non-silicone oils and in particular O Q -O-I Q hydrocarbons or hydrocarbons containing more than 16 carbon atoms and in particular alkanes; oils of animal origin; triglyceride oils of plant origin; essential oils; fluoro oils or glycerides of synthetic origin, fatty alcohols; fatty acid and/or fatty alcohol esters other than triglycerides, fatty acid amides and silicone oils.
- the oils are not oxyalkylenated or glycerolated ethers.
- the oils do not comprise any C2-C3 oxyalkylene units or any glycerolated units.
- the oils are not fatty acids which, in salified form, give water-soluble soaps.
- oils that may be used as second ingredient b) in composition A or B in accordance with the invention may be silicones.
- the silicones may be volatile or non-volatile, cyclic, linear or branched silicones, which are unmodified or modified with organic groups, having a viscosity from 5x10 6 to 2.5 m 2 /s at 25°C, and preferably 1 x10 5 to 1 m 2 /s.
- the silicone is chosen from polydialkylsiloxanes, especially polydimethylsiloxanes (PDMSs), and organomodified polysiloxanes comprising at least one functional group chosen from poly(oxyalkylene) groups, amino groups and alkoxy groups.
- PDMSs polydimethylsiloxanes
- organomodified polysiloxanes comprising at least one functional group chosen from poly(oxyalkylene) groups, amino groups and alkoxy groups.
- Organopolysiloxanes are defined in greater detail in Walter Noll’s Chemistry and Technology of Silicones (1968), Academic Press. They may be volatile or non-volatile.
- the silicones are more particularly chosen from those with a boiling point of between 60°C and 260°C, and even more particularly from:
- cyclic polydialkylsiloxanes comprising from 3 to 7 and preferably from 4 to 5 silicon atoms.
- cyclic polydialkylsiloxanes comprising from 3 to 7 and preferably from 4 to 5 silicon atoms.
- These are, for example, octamethylcyclotetrasiloxane, sold especially under the name Volatile Silicone ® 7207 by Union Carbide or Silbione ® 70045 V2 by Rhodia, decamethylcyclopentasiloxane sold under the name Volatile Silicone ® 7158 by Union Carbide, and Silbione ® 70045 V5 by Rhodia, and mixtures thereof.
- Non-volatile polydialkylsiloxanes are preferably used.
- silicones are more particularly chosen from polydialkylsiloxanes, among which mention may be made mainly of polydimethylsiloxanes bearing trimethylsilyl end groups.
- the viscosity of the silicones is measured at 25°C according to ASTM standard 445 Appendix C.
- oils of the 200 series from the company Dow Corning, such as DC200 with a viscosity of 60 000 mm 2 /s; - the Viscasil® oils from General Electric and certain oils of the SF series (SF 96, SF 18) from General Electric.
- CTFA dimethiconol
- Compositions A and/or B as defined previously may comprise one or more oils, chosen from fatty alcohols, fatty acid amides and fatty acid esters in the form of oils.
- fatty alcohols, esters and acids more particularly bear at least one linear or branched, saturated or unsaturated hydrocarbon-based group comprising 6 to 30 carbon atoms, which is optionally substituted, in particular with one or more hydroxyl groups (in particular 1 to 4). If they are unsaturated, these compounds may comprise one to three conjugated or unconjugated carbon-carbon double bonds.
- these compounds may represent an ester of a C 1 -C 10 alcohol and of a C 6 -C 30 fatty acid such as R-C(0)-0-R' with R representing a linear or branched C 6 -C 30 alkyl or linear or branched C 6 -C 30 alkenyl group, comprising one or two unsaturations, and R representing a linear or branched C 1 -C 10 alkyl group.
- R represents a linear C 10 -C 20 alkyl group and R' represents a C 1 -C 6 alkyl group that is preferably branched, such as isopropyl myristate.
- the ingredient ii) represents one or more amides of a C 6 -C 30 fatty acid and of a primary or secondary, preferably primary, C 1 -C 10 amine, such as those of formula R”-C(0)-N(R a )-R”’ with R” representing a linear or branched C 6 -C 30 alkyl or a linear or branched C 6 -C 30 alkenyl group, comprising one or two unsaturations, which may be substituted with one or more hydroxyl groups, or (di)(Ci-C 6 )(alkyl)amino, and R’” representing a linear or branched C 1 -C 10 alkyl group, R a representing a hydrogen atom or an alkyl group as defined for R’”.
- R represents a C 14 -C 20 alkenyl group
- R a represents a hydrogen atom
- R’ represents a C 1 -C 6 alkyl group optionally substituted with (di)(Ci- C 4 )(alkyl)amino such as oleylamidopropyldimethylamine.
- C 6 -C 16 alkanes they are linear or branched, and possibly cyclic. Examples that may be mentioned include hexane, dodecane and isoparaffins such as isohexadecane and isodecane.
- the linear or branched hydrocarbons containing more than 16 carbon atoms may be chosen from liquid paraffins, petroleum jelly, liquid petroleum jelly, polydecenes, and hydrogenated polyisobutene such as Parleam ® , squalane, squalene, and mixtures thereof.
- hydrocarbons mention may be made of the refined vegetable perhydrosqualene sold under the name Fitoderm by the company Cognis; the vegetable squalane sold, for example, under the name Squalive by the company Biosynthis.
- liquid fatty acid triglycerides containing from 6 to 30 carbon atoms for instance heptanoic or octanoic acid triglycerides, or alternatively, for example, sunflower oil, corn oil, soybean oil, marrow oil, grapeseed oil, sesame oil, hazelnut oil, apricot oil, macadamia oil, arara oil, castor oil, avocado oil, caprylic/capric acid triglycerides, for instance those sold by the company Stearinerie Dubois or those sold under the names Miglyol ® 810, 812 and 818 by the company Dynamit Nobel, jojoba oil and shea butter oil.
- liquid fatty acid triglycerides containing from 6 to 30 carbon atoms for instance heptanoic or octanoic acid triglycerides, or alternatively, for example, sunflower oil, corn oil, soybean oil, marrow oil, grapeseed oil, sesame oil, hazelnut oil,
- fluoro oils mention may be made of perfluoromethylcyclopentane and perfluoro-1 ,3-dimethylcyclohexane, sold under the names Flutec ® PC1 and Flutec ® PC3 by the company BNFL Fluorochemicals; perfluoro-1 ,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the names PF 5050 ® and PF 5060 ® by the company 3M, or bromoperfluorooctyl sold under the name Foralkyl ® by the company Atochem; nonafluoromethoxybutane and nonafluoroethoxyisobutane; perfluoromorpholine derivatives such as 4-(trifluoromethyl)perfluoromorpholine sold under the name PF 5052 ® by the company 3M.
- Flutec ® PC1 and Flutec ® PC3 by
- the oil(s) of the invention are non-silicone oils.
- non-silicone o/ means an oil not containing any silicon (Si) atoms and the term “silicone o/T means an oil containing at least one silicon atom.
- the oil(s) are chosen from O Q -O-I Q alkanes, hydrocarbons containing more than 16 carbon atoms, polydecenes, liquid esters of a fatty acid and/or of a fatty alcohol, and liquid fatty alcohols, or mixtures thereof.
- oils are chosen from liquid petroleum jelly, C6-C16 alkanes, polydecenes and hydrocarbons containing more than 16 carbon atoms.
- the oil(s) are chosen from mineral oils such as liquid petroleum jelly, squalane and squalene.
- the oils are chosen from oils of natural origin, more particularly oils of plant origin, preferentially chosen from jojoba oil, babassu oil, sunflower oil, olive oil, coconut oil, Brazil nut oil, marula oil, corn oil, argan oil, soybean oil, marrow oil, grapeseed oil, linseed oil, sesame oil, hazelnut oil, apricot oil, macadamia oil, arara oil, coriander oil, almond oil, castor oil, avocado oil, shea butter oil and also rapeseed oil, borage oil, evening primrose oil, pomegranate oil, mango oil, palm oil, cottonseed oil and coconut kernel oil, and mixtures thereof.
- compositions A and/or B may contain one or more oils of plant origin preferably chosen from avocado oil, olive oil, coconut oil, coconut kernel oil, argan oil and sunflower oil; more preferentially, the oil(s) of the invention are chosen from coconut kernel oils, and mixtures thereof.
- oils of plant origin preferably chosen from avocado oil, olive oil, coconut oil, coconut kernel oil, argan oil and sunflower oil; more preferentially, the oil(s) of the invention are chosen from coconut kernel oils, and mixtures thereof.
- compositions A and/or B may contain one or more oils chosen from C6-C16 hydrocarbons or hydrocarbons containing more than 16 carbon atoms, and in particular alkanes; preferably from:
- C6-C16 hydrocarbons the latter being linear, branched, and optionally cyclic, preferably chosen from hexane, dodecane, isoparaffins such as isohexadecane and isodecane, and mixtures thereof;
- linear or branched hydrocarbons containing more than 16 carbon atoms preferably chosen from liquid paraffins, petroleum jelly, liquid petroleum jelly, polydecenes, and hydrogenated polyisobutene such as Parleam ® , hemisqualane, squalane and squalene, and mixtures thereof;
- Compositions A and/or B used in the process of the invention preferably comprise one or more oils in an amount inclusively between 1 % and 80% by weight, more particularly between 2% and 50% by weight, preferentially between 3% and 40% by weight and more preferentially between 2% and 25% by weight, relative to the total weight of said compositions.
- Compositions A and/or B used in the process of the invention may also contain various adjuvants conventionally used in hair dye compositions, such as anionic, cationic, amphoteric or nonionic surfactants, mineral or organic thickeners, and in particular anionic, cationic, nonionic and amphoteric polymeric associative thickeners, antioxidants, penetrants, sequestrants, fragrances, buffers, dispersants, conditioning agents, for instance ceramides, film-forming agents, preserving agents, opacifiers and mineral or organic thickeners such as clays.
- adjuvants conventionally used in hair dye compositions, such as anionic, cationic, amphoteric or nonionic surfactants, mineral or organic thickeners, and in particular anionic, cationic, nonionic and amphoteric polymeric associative thickeners, antioxidants, penetrants, sequestrants, fragrances, buffers, dispersants, conditioning agents, for instance ceramides, film-forming agents,
- the above adjuvants are generally present in an amount for each of them of between 0.01 % and 40% by weight relative to the weight of the composition, and preferably between 0.1 % and 20% by weight relative to the weight of the composition under consideration.
- Compositions A and/or B used in the dyeing process of the invention may also contain one or more additional direct dyes, in particular synthetic dyes or dyes of natural origin, other than the indigo-producing plant powder and/or extract i) and the henna ii) and the natural dyes iii) as described previously.
- additional direct dyes in particular synthetic dyes or dyes of natural origin, other than the indigo-producing plant powder and/or extract i) and the henna ii) and the natural dyes iii) as described previously.
- the synthetic direct dyes are preferably chosen from those conventionally used in direct dyeing, among which may be mentioned all the commonly used aromatic and/or non-aromatic dyes, such as neutral, acidic or cationic nitrobenzene direct dyes, neutral, acidic or cationic azo direct dyes, natural direct dyes, neutral, acidic or cationic quinone and in particular anthraquinone direct dyes, azine, triarylmethane or indoamine direct dyes, methines, styryls, porphyrins, metalloporphyrins, phthalocyanines, methine cyanines and fluorescent dyes.
- aromatic and/or non-aromatic dyes such as neutral, acidic or cationic nitrobenzene direct dyes, neutral, acidic or cationic azo direct dyes, natural direct dyes, neutral, acidic or cationic quinone and in particular anthraquinone direct dyes, azine, triarylmethane or in
- the natural direct dyes other than indigo i) and henna ii) are chosen from condensed, gallic or ellagic tannins, naphthoquinones (juglone, lawsone), anthraquinones (emodin, alizarin, etc.), isatin, curcumin, spinulosin, polyphenols such as flavonoids, isoflavonoids, pterocarpans, neoflavones or orceins.
- These natural dyes may be added in the form of defined compounds, extracts or plant parts.
- Said defined compounds from extracts or from plant parts are preferably in the form of powders, in particular fine powders whose particles have sizes identical to that of the indigo- producing plant powder as defined previously.
- the natural or synthetic direct dye(s) other than the indigo- producing plant powder i) and henna ii) used in the process of the invention particularly represent from 0.001 % to 10% by weight relative to the total weight of the ready-to-use composition and even more preferentially from 0.05% to 5% by weight relative to the total weight of the composition under consideration.
- compositions of the invention do not contain any synthetic direct dyes, i.e. dyes that do not occur in nature.
- composition B may comprise one or more additional natural dyes chosen from the compounds of formula (a) or (b) below, or mixtures thereof:
- Such compounds are, for example, extracted from moulds of the species Monascus purpureus (synonyms: M. albidus, M. anka, M. araneosus, M. major, M. rubiginosus and M. n ⁇ h ⁇ )
- Composition A used in the process of the invention may also comprise one or more oxidation bases and/or one or more couplers conventionally used for dyeing keratin fibres.
- oxidation bases mention may be made of para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, bis-para-aminophenols, ortho- aminophenols and heterocyclic bases, and the addition salts thereof.
- couplers mention may be made especially of meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalene-based couplers and heterocyclic couplers, and the addition salts thereof.
- the oxidation base(s) present in the composition(s) are each generally present in an amount of between 0.001 % and 10% by weight, of the total weight of the dye composition(s).
- the dyeing process of the invention does not use any oxidation dyes.
- the pH of the ready-to-use composition A after mixing with the aqueous composition, preferably with water, containing the ingredients i) and optionally ii), ranges from 2 to 9, preferably from 3 to 7 and better still from 4 to 6.5.
- the pH of the ready-to-use composition A may be adjusted to the desired value by means of acidic or alkaline agents usually used in the dyeing of keratin fibres, or alternatively using standard buffer systems.
- acidic agents that may be used in the compositions of the invention, mention may be made of mineral or organic acids, for instance hydrochloric acid, orthophosphoric acid or sulfuric acid, carboxylic acids, for instance acetic acid, tartaric acid, citric acid and lactic acid, and sulfonic acids; the acid is preferably an organic acid such as citric acid.
- hydrochloric acid for instance hydrochloric acid, orthophosphoric acid or sulfuric acid
- carboxylic acids for instance acetic acid, tartaric acid, citric acid and lactic acid
- sulfonic acids the acid is preferably an organic acid such as citric acid.
- the dyeing process uses one or more surfactants.
- the surfactant(s) are chosen from anionic and nonionic surfactants.
- the dyeing process according to the invention involves two different compositions A and B used during two different steps E1 ) and E2), via their application to keratin fibres.
- composition A is applied first to the keratin fibres; and composition B is applied to the keratin fibres after the application of composition A; the process preferably involves at least one rinsing step, and/or a washing step between the dyeing step involving composition A and the treatment step involving the application of composition B.
- the dyeing process according to the invention involves the following steps:
- the first step consists in preparing composition A as defined previously, in particular in the form of a poultice as defined previously comprising water, using indigo-producing plant powder and/or extract i) and optionally henna ii);
- the ready-to-use composition A as defined previously is then applied to the keratin fibres and is left on said fibres preferably for a minimum time of 10 minutes, preferentially a time ranging from 10 minutes to 12 hours, better still ranging from 15 to 75 minutes and better still from 15 to 60 minutes;
- aqueous composition B whose pH is less than 7 and comprising one or more natural dyes iii) chosen from:
- anthraquinones preferably comprising at least one carboxylic acid function, preferably chosen from carminic acid, laccaic acid A, laccaic acid B, laccaic acid C, laccaic acid D, pseudopurpurin, munjistin and/or kermesic acid;
- iii-ii) betalains preferably betanin
- anthocyanidins also known as anthocyanides or anthocyanidols
- formula (Vg) which include at least three hydroxyl groups, preferably chosen from cyanidin, delphinidin, pelargonin, malvidin, peonidin and petunidin, and mixtures thereof;
- iii-v) naphthoquinones comprising at least two hydroxyl groups, preferably at least three hydroxyl groups, preferably chosen from alkanine (also known as Orcanette) and/or shikokine;
- the keratin fibres are rinsed with water until the poultice has disappeared, and/or washed in the presence of a shampoo; preferably, according to this third step, the fibres are rinsed with water without being shampooed;
- the keratin fibres may then be either dried or left wet, preferably left wet.
- composition B as defined previously is applied first to the keratin fibres, and the ready-to-use composition A as defined previously is then applied to the keratin fibres and is left to stand on said fibres preferably as defined previously.
- the fibres are also preferably rinsed as described previously.
- the keratin fibres are washed and/or rinsed.
- the ready-to-use composition A preferably comprises water and is in the form of a poultice; it may also comprise one or more oils, and/or one or more organic solvents and cosmetic additives, mixed with the indigo-producing plant powder i) and optionally with the henna ii).
- the indigo-producing plant powder i) and optionally the henna is mixed with or crumbled into an aqueous composition, preferably water, at a temperature below 100°C, in particular between 25°C and 70°C and better still between 25°C and 50°C.
- the temperature of application of composition A ranges from room temperature (15°C to 25°C) to 50°C and more particularly from 25°C to 40°C.
- the head of hair may advantageously be subjected to a heat treatment by heating at a temperature ranging from 30°C to 150°C and better still from 30°C to 60°C.
- this operation may be performed using a hairstyling hood, a hairdryer, an infrared ray dispenser or any other standard heating appliance.
- a particular embodiment of the invention relates to a dyeing process which is performed at room temperature (25° C).
- the evaluation of the colouring obtained on the keratin fibres may be performed visually or with a spectrocolorimeter in the CIE L * a * b * system, for example using a Minolta CM 3600 spectrocolorimeter (illuminant D65, angle 10°, specular component included).
- L * represents the lightness of the colour
- a * indicates the green/red colour axis
- b * indicates the blue/yellow colour axis.
- the smaller the value of L * the darker and more powerful the colouring.
- the colour buildup on the hair corresponds to the variation in colouring between the locks of hair before and after the treatment or dyeing are defined by (DE * ) according to the following equation:
- L * , a * and b * represent the values measured on locks of hair after dyeing and Lo * , a o * and b o * represent the values measured on locks of undyed hair.
- the colour difference DE * between the colour at TO and the colour after 9 days represents the stability of the colour of the hair and is calculated by means of the following equation:
- a colouring for which the DE * 9 days after dyeing is less than 2 is considered as stable over time.
- compositions were prepared:
- the percentages are indicated on a weight basis relative to 100 g of composition.
- the following dye composition is prepared by mixing, at the time of use, the natural dye powder with water at 50°C so as to make the following poultice:
- the described ingredients i) and ii) are dissolved or dispersed in the relative amounts described in the above table in water at 50°C in a bowl. The whole is homogenized with a spoon or spatula. The poultice obtained is very creamy, and is applied to locks of natural hair containing 90% white hairs, at a rate of 10 g of composition per 1 g of locks. The locks are left to stand for 60 minutes at 33°C under cellophane.
- compositions are then applied at a rate of 5 g per gram of hair and left to stand on the hair for 15 minutes at 40°C under cellophane, comparatively with reference locks which have not undergone any post-treatment.
- the colour of the locks was evaluated in the CIE L * a * b * system, using a Minolta CM 3600 spectrocolorimeter (illuminant D65, angle 10°, specular component included).
- L * represents the intensity of the colour
- a * indicates the green/red colour axis
- b * indicates the blue/yellow colour axis.
- the colour buildup corresponds to the variation in colouring between the locks of hair before and immediately after performing the process are defined by (DE * ) according to the following equation:
- L * , a * and b * represent the values measured on locks of hair after dyeing and l_o * , a o * and bo * represent the values measured on locks of undyed hair.
- DE * value the higher the DE * value, the better is the buildup of the colour.
- the colour difference DE between the colour at TO and the colour after 3 weeks represents the stability of the colour of the hair and is calculated by means of the following equation:
- L o * , a o * and bo * represent the colorimetric coordinates measured on locks of hair at TO immediately after performing the process and l_9D*, ago * and b*9D represent the colorimetric coordinates 9 days after performing the process.
- Delta b represents the variation between bo and b 3S .
- the dyeing process according to the invention involving a post-treatment with compositions B2 and B3 makes it possible to neutralize the unaesthetic yellow/green colour on the day of dyeing, in contrast with the comparative treatments of the invention without post- treatment or else with post-treatment compositions B1 (comparative 1 and 2). This is reflected:
- compositions B2 and B3 processes of the invention relative to the hair dyed without post-treatment or else with the post-treatment B1 (comparative 1 and 2).
- compositions B2 and B3 make it possible to obtain colourings that show better colour buildup (higher DE).
- the colourings obtained with the process of the invention are stable over time (low DE T0/T 9D value), in contrast with the colourings without post-treatment (comparative 1 ) which require a certain amount of time to obtain an aesthetic colour (brown).
- compositions B2 and B3 make it possible to obtain colourings that show better colour buildup (higher DE) and more aesthetic brown (higher red components or lower yellow components) from the end of the dyeing process. These colourings are moreover stable over time (low ⁇ ETQ days-to).
- the process of the invention thus makes it possible to accelerate the revelation of the colouring using henna and indigo to obtain the final dyeing result from the day of application and to avoid unaesthetic intermediate tints, while at the same time obtaining better colour buildup.
- Dyeing step The following dye composition was prepared by mixing, at the time of use, the natural dye powders with water at 50°C so as to make the following poultice:
- This mixture is applied to locks of permanent-waved Caucasian hair containing 90% white hairs (PWW) at a bath ratio of 10 g per 1 g of lock.
- the locks are left to stand for 60 minutes at 33°C under cellophane.
- each of the post-treatment compositions is then applied at a rate of 5 g per gram of hair to locks dyed beforehand with composition C2 and left to stand on the locks for 15 minutes at 33°C under cellophane, compared with reference locks dyed with composition C2 to which no post-treatment composition was applied.
- the poultice colours the hair in an unaesthetic golden green. Over time, the colouring changes and the green tint disappears, but the colouring retains an unaesthetic shade.
- composition B4 The basic post-treatment with dye (comparative composition B4) partially neutralizes the green of the colouring, but the shade remains unaesthetic.
- composition B5 makes it possible to intensify the colour in terms of colour buildup and power and to neutralize the unaesthetic green/golden tint, in contrast with the comparative dyeing processes (without post-treatment or else with an alkaline post- treatment with dye).
- colorimetric values measured demonstrate, in the case of the post- treatment with composition B5 according to the invention, significantly higher values of DE * (better colour buildup) and lower values of L * (more intense colouring).
- DE T3weeks/T0 and Db * T3weeks/T0 were calculated using the same equation as that described previously, but using the colorimetric values measured three weeks after performing the dyeing process.
- EXAMPLE 3 1 The following dye composition was prepared by mixing, at the time of use, the natural dye powders with water at 50°C so as to make the following poultice:
- This poultice is applied to locks of permanent-waved hair (PWW) containing 90% white hairs at a bath ratio of 10g per 1 g of lock.
- the locks are left to stand for 45 minutes at 33°C under cellophane.
- each of the post-treatment compositions B6 to B9 is then applied at a rate of 5 g per gram of hair to locks dyed beforehand with composition C3 and left to stand on the locks for 15 minutes at 40°C under cellophane, compared with reference locks dyed with composition C3 to which no post-treatment composition was applied.
- the colour of the locks was evaluated in the CIE L * a * b * system, using a Minolta CM 3600 spectrocolori meter (illuminant D65, angle 10°, specular component included).
- L * represents the intensity of the colour
- a * indicates the green/red colour axis
- b * indicates the blue/yellow colour axis.
- the colour buildup corresponds to the variation in colouring between the locks of hair before and immediately after performing the process are defined by (DE * ) according to the following equation:
- L * , a * and b * represent the values measured on locks of hair after dyeing and L0 * , aO * and bO * represent the values measured on locks of undyed hair.
- DE * value the higher the DE * value, the better is the buildup of the colour.
- the locks treated by the method according to the invention have a better colour buildup (values of dE * higher) and a more powerful color (value of L * lower) compared to the locks treated with the method without post-treatment (comparative 1 ).
- the measured colorimetric values demonstrate a neutralization of the unsightly green / golden reflection (yellow component b * smaller) in the case of the locks treated with the method with a post-treatment according to the invention compared to the method without post-treatment (comparative 1 ).
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Abstract
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1762944A FR3075643B1 (en) | 2017-12-22 | 2017-12-22 | PROCESS FOR COLORING MULTI-STAGE KERATIN FIBERS FROM INDIGOFERE (S) PLANT POWDER AND ACID PROCESSING COMPRISING A PARTICULATE COLOR |
PCT/EP2018/086805 WO2019122436A1 (en) | 2017-12-22 | 2018-12-21 | Multi-step process for dyeing keratin fibres using indigo-producing plant powder, and acidic treatment comprising a particular dye |
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EP3727304A1 true EP3727304A1 (en) | 2020-10-28 |
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EP18830489.3A Pending EP3727304A1 (en) | 2017-12-22 | 2018-12-21 | Multi-step process for dyeing keratin fibres using indigo-producing plant powder, and acidic treatment comprising a particular dye |
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EP (1) | EP3727304A1 (en) |
JP (1) | JP7063998B2 (en) |
FR (1) | FR3075643B1 (en) |
WO (1) | WO2019122436A1 (en) |
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CN109674732A (en) * | 2019-03-07 | 2019-04-26 | 宋子奎 | A kind of indigo darkener and hair dyeing technique |
FR3104435B1 (en) * | 2019-12-13 | 2022-11-18 | Oreal | Process for coloring keratinous fibers using powder and/or extract of indigo plants and arginine |
DE102022205252A1 (en) * | 2022-05-25 | 2023-11-30 | Henkel Ag & Co. Kgaa | Two-stage coloring process for improved hair coloring with natural dyes |
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ES2115572T1 (en) | 1996-05-09 | 1998-07-01 | Wella Ag | PROCEDURE AND PRODUCT FOR HAIR DYEING. |
JP2003034625A (en) * | 2001-07-18 | 2003-02-07 | Hoyu Co Ltd | Vegetable hair dyeing agent, set of vegetable hair dyeing agent and method for hair dyeing |
FR2948871B1 (en) * | 2009-08-05 | 2012-03-30 | Oreal | COSMETIC COMPOSITION COMPRISING A LACCAIC ACID AND A PARTICULAR CARBOXYLIC ACID |
FR3004944B1 (en) * | 2013-04-26 | 2015-04-03 | Oreal | COMPOSITION COMPRISING HENNE AND / OR INDIGO, A FATTY BODY, A (BI) CARBONATE, AND AN ACID, AND A CAPILLARY COLORING METHOD IMPLEMENTING THE SAME |
FR3004941B1 (en) * | 2013-04-26 | 2015-05-22 | Oreal | COMPOSITION BASED ON HENNE OR INDIGO POWDER WITH OIL PRE-DISPERSION, HAIR COLORING METHOD USING THE SAME |
FR3004943B1 (en) * | 2013-04-26 | 2015-05-15 | Oreal | COMPOSITION COMPRISING HENNE AND / OR INDIGO, OIL AND SACCHARIDE, AND CAPILLARY COLORING METHOD IMPLEMENTING THE SAME |
FR3004942B1 (en) * | 2013-04-26 | 2015-04-03 | Oreal | CAPILLARY COLORING PROCESS USING HENNE THEN INDIGO AND OIL AND / OR BUTTER |
US9820922B1 (en) * | 2016-05-12 | 2017-11-21 | L'oreal | Methods and compositions for improving the quality and durability of color in artificially colored hair |
-
2017
- 2017-12-22 FR FR1762944A patent/FR3075643B1/en active Active
-
2018
- 2018-12-21 WO PCT/EP2018/086805 patent/WO2019122436A1/en unknown
- 2018-12-21 JP JP2020533790A patent/JP7063998B2/en active Active
- 2018-12-21 EP EP18830489.3A patent/EP3727304A1/en active Pending
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WO2019122436A1 (en) | 2019-06-27 |
FR3075643B1 (en) | 2019-11-15 |
FR3075643A1 (en) | 2019-06-28 |
JP2021508684A (en) | 2021-03-11 |
JP7063998B2 (en) | 2022-05-09 |
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