GB2308063A - Two phase sun protection product - Google Patents
Two phase sun protection product Download PDFInfo
- Publication number
- GB2308063A GB2308063A GB9525633A GB9525633A GB2308063A GB 2308063 A GB2308063 A GB 2308063A GB 9525633 A GB9525633 A GB 9525633A GB 9525633 A GB9525633 A GB 9525633A GB 2308063 A GB2308063 A GB 2308063A
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- United Kingdom
- Prior art keywords
- composition
- oil
- sun
- spf
- benzophenone
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
-
- 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
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/27—Zinc; Compounds thereof
-
- 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
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/29—Titanium; Compounds thereof
-
- 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
- A61K8/37—Esters of carboxylic acids
-
- 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
- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
- A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
- A61K8/445—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof aromatic, i.e. the carboxylic acid directly linked to the aromatic ring
-
- 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
- A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
- A61K8/466—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Inorganic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Dermatology (AREA)
- Emergency Medicine (AREA)
- Cosmetics (AREA)
Description
SUN PROTECTION PRODUCT
This invention relates to products for protecting the skin from harmful rays of the sun and is concerned with a sun protection product composed of two parts which are mixed together just prior to application to the skin, thus enabling polar and non-polar materials to be kept in separate layers, one being oil-based and the other being water-based, without the need for an emulsifier.
Background
Light waves from the sun which reach the earth are divided into infra-red rays, visible light rays and UV rays on the basis of their wavelengths. UV rays comprise 6% of the total energy released from the sun and may be categorised into three different types:
1. UV-A: 320-400nm approx.
2. UV-B: 280-320nm approx.
3. UV-C: 190-280nm approx.
UV-A rays are primarily responsible for inducing melanin production within the skin resulting in a sun tan. UV-B rays are primarily responsible for sun-induced erythema, popularly known as sun burn. UV-C rays are absorbed by the ozone layer which surrounds the earth and do not reach the earth's surface.
There was a time when sun products meant sun tanning products and the active ingredients were selected for their ability to absorb UV-B radiation while exhibiting the minimum of interference with W-A. Now Sun Products mean Sun Care and a products capability to reduce the amount of 1w-A radiation reaching the skin is given as much prominence as its capacity to reduce W-B radiation.
In 1972 W.P.Herzog in the opening lecture of a symposium entitled "Skin - Environmental
Responses and Protection" organised by the Society of Cosmetic Chemists of Great Britain warned ofthe dangers of both W-B and W-A radiation and their contribution to skin ageing
T. Elliott in the 1984 Medal Lecture to the Society of Cosmetic Scientists warned about the dangers of 1w-B radiation and suggested that the incorporation of a W-B filter in day time skin care products sufficient to screen 50% ofthe W-B radiation would seem to be the best guarantee of looking forty years old when actually fifty.
It is now realised that the main cause of visible, premature skin ageing is due to 1w radiation and its side effects. Wrinkles are only seen on areas exposed to the sun and are believed to be entirely due to the effects ofthe sun on the dermal connective tissue. The changes in the dermis due to solar damage are known by the term solar elastotic degeneration or solar elastosis. If these areas can be protected from solar radiation by the long-term use of properly formulated sun protection products then the onset of visible ageing can be substantially delayed.
Also of concern is the rise in the incidence of skin cancers, blamed on a combination of the depleted ozone layer and the North European passion for sunbathing. Because ofthis the continuous use of sun block preparations in Australia is being promoted by The Australian
Cancer Society.
Accordingly, there are two types of sun protection formulations utilised as protective measures against sun-burning, one type being for obtaining a suntan while preventing sunburn and the other type being for prevention ofboth suntan and sunburn. Ifprotection is to be afforded against both W-A and W-B radiation, more than one sun protection material will be required, also to achieve the higher SPF values a cocktail of 1w absorbing materials may be necessary and care must be taken to stay within the restrictions on limits imposed by the relevant legislation.
There are 53 materials in the International Nomenclature of Cosmetic Ingredients, the INCI list, shown as 1w absorbers plus micronised oxides; ofthese only 24 are listed as 1w Filters which cosmetic products may contain under the 76/768/EEC Directive and almost all are subject to restrictions on concentration. It is well known to those skilled in the art that some materials are mutually incompatible because oftheir chemical composition and that the nature ofthe sun product composition can have an enhancing or deleterious effect ofthe Sun
Protection Factor or SPF values obtained.
Enhancing SPF values has many advantages, it saves eosts, it subjects the user to less of the active material and it may simplify formulation. It is equally important to avoid materials which may suppress SPF values; the negative effect of agglomeration with micronised oxides is now well known and documented but formulators may still overlook solubility problems with organic filters which can lead to precipitation within the product and poor spreading and film forming on application. The use of esters such as octyldodecyl neopentanoate, caprylic\capric triglyceride, dicapryl ether and the silicone esters, diisostearyl and dilauryl trimethylolpropane siloxy silicate, can improve solubility and promote an even film on application.
SPF is a commonly used measure of photoprotection of a sunscreen against erythema. This number is derived from another parameter, the minimal erythemal dose, MED. MED is defined as the "least exposure dose at a specified wavelength that will elicit a delayed erythema response". The MED indicates the amount of energy reaching the skin and the responsiveness of the skin to the radiation. The SPF of a particular photoprotector is obtained by dividing the
MED of protected skin by the MED of unprotected skin. The higher the SPF, the more effective the agent in preventing sunburn. The SPF value tells how many times longer a person can stay in the sun with use of the sunscreen, compared to the same person with unprotected skin, before that person will experience I MED.For example, utilising a sunscreen with an
SPF of 6 will allow an individual to stay in the sun six times longer before receiving I MED.
Although final testing is to be performed on human volunteers the instrumental technique commonly known as the Diffey-Robson method using the Optometrics SPF-290 is gaining increasing acceptance as a development tool and was used for all preliminary SPF measurements by the inventors.
Brief Descrii,tion of the Invention
The composition is a two layer sun protection product, the upper layer is an oil layer, the lower layer is an aqueous or aqueous-alcoholic one, the total composition contains one or more UVA protectants. Immediately prior to use the product is shaken to inter-disperse the phases and the product applied. The layers may be clear or opaque and may be coloured to better define their separation.
Detailed Description of the Invention.
Some 1w absorbers are oil soluble and some are water soluble, also some micronised oxides are treated to be hydrophilic and some to be hydrophobic. It is generally thought desirable that sun care compositions be resistant to wash-offby water and loss through perspiration.
Because of this most sun care compositions are oil based but because oil based products can impart an excessively oily feel to the skin many are sold in the form of emulsions whereby water is added to the formulation and intimately combined with it by the use of an emulsifier or emulsifiers. However the presence of an emulsifier may also create problems. Emulsifiers, by their very nature, render oils miscible with water so the water resistance of the product is reduced. Additionally some users may be sensitive to the emulsifier, in particular the class of emulsifiers known as ethoxylated compounds are known to cause sensitisation reactions to some users and also many emulsifiers may reduce the value of the SPF obtained. One well known emulsifier is triethanolamine stearate and this is known to those skilled in the art to reduce the SPF values of sun care compositions.
To overcome the problems ofpreparing a sun care composition with two or more sunscreen materials contained within it and to supply it as a water and oil mixture without the use of emulsifiers created many problems until it was discovered that the product could be prepared and supplied as a bi-layer composition consisting oftwo incompatible phases, one consisting of oil or oils and other non-polar materials, and the other being water, or water plus ethanol, containing water-soluble or water-dispersible materials. 1w absorbing or scattering materials are dissolved or dispersed in one or the other or both the phases. The two layers are brought together in intimate contact by vigorous shaking immediately prior to use.The product is pleasant to apply and the surprising discovery was made that the rapid evaporation of the aqueous-alcoholic phase imparts a pleasant cooling effect to the skin.
The oil phase contains oil or oils selected from those well known in the art for cosmetic use and include, but are not limited to, mineral oil, fatty acid esters such as isopropyl myristate and isopropyl palmitate, cetearyl octanoate, Cl2-l5 alkyl benzoatetriglycerides, volatile and non-volatile silicone oils, highly branched hydrocarbons, octyldodecyl neopentanoate, caprylic\capric triglyceride, dicapryl ether and the silicone esters, diisostearyl and dilauryl trimethylolpropane siloxy silicate and mixtures of these materials. Emollients useful in the invention are further described in U.S. Pat. No. 4,919,934 , to Deckner et aL, issued Apr. 24 1990, which is incorporated herein by reference in its entirety.Oils of natural origin may also be used and include, but are not limited to, vegetable or animal oils, modified or not, such as sweet almond oil, avocado oil, calophyllum oil, castor oil, olive oil, lanolin and its derivatives, perhydrosqualene, groundnut oil, wheatgerm oil, linseed oil, jojoba oil, apricot kernel oil, palm oil, pistachio seed oil, sesame oil, rapeseed oil, cade oil, maize germ oil, peach kernel oil, poppyseed oil, pine oil, soybean oil, slower oil, coconut oil, hazelnut oil, grapeseed oil or sunflower oiL Preferred oils are non-polar hydrocarbon oils and fatty acid esters. Particularly preferred are mineral oil, decyl oleate, isopropyl myristate and isopropyl palmitate.The oil phase may be from 2 - 98% ofthe composition by weight, preferred is 25% to 75% by weight, particularly preferred is 30 - 45% by weight.
The aqueous or aqueous-alcoholic phase may consist of water, water plus ethanol or water plus other lower aliphatic alcohols such as isopropanol. It may optionally contain a humectant or hygroscopic compound such as glycerine, propylene glycol, sorbitol or a polyethylene glycoL Preferred is an aqueous-alcoholic phase where the alcohol is ethanol and the proportions of water to alcohol are within the range 4:1 to 1:4; preferred is the range between 3:1 and 1:3 and particularly preferred isthe rangebt'een 2:1 and 1:2.
The pH ofthe composition may be adjusted by the addition of well known cosmetic buffer combinations such as sodium lactate with lactic acid, phosphoric acid with sodium phosphate or boric acid with sodium borate or any of the combinations known to those skilled in the art.
Alternatively the pH may be adjusted by the addition of an amine or citric acid as required and one desired result of such addition may be the neutralisation of a 1w absorbing agent such as
Benzophenone-4 which requires neutralisation to reach its effective molecular stste. The pH of the composition may be adjusted to be within the range 3.5 - 9.5, preferred is the range 4 - 8 and particularly preferred is the range 5.0 - 7.5. It may optionally contain extracts of plants commonly referred to as herbal extracts or of marine plants or algae. In addition the oil phase and/or the aqueous phase may contain one or more preservatives selected from those named in
Annex VI Part 1 or Annex VI Part 2 of the 76/768/EEC Directive.
The UV absorbing or scattering agents include those listed in Annex Vm Part 1 or Annex
VIII Part 2 of the 76/768/EEC Directive and include but are not limited to, p-Aminobenzoic acid, its salts and its derivatives (ethyl isobutyl, glyceryl esters; p-dimethylaminobenzoic acid);
Octyl Methoxycinnamate (i.e. ethylhexyl-p-methoxycinnamate); Anthranilates (i.e., o-aminobenzoates; methyl, octal, amyl, menthyl, phenyl, benny2 phenylethyl, linalyl, terpinyl, and cyclohexenyl esters); Salicylates (octal amyl, phenyl, benzyl, menthyl, glyceryl, and dipropyleneglycol esters); 2-Phenylbennimidazole-5-sulfonic acid;Cinnamic acid derivatives (menthyl and benzyl esters, -phenyl cinnamonitrile; butyl cinnamoyl pyruvate);
Dihydroxycinnamic acid derivatives (umbelliferone, methylumbelliferone, methylaceto-umbelliferone); Trihydroxycinnamic acid derivatives (esculetin, methylesculetin, daphnetin, and the glucosides, esculin and daphnin); Hydrocarbons (diphenylbutadiene, stilbene); Dibenzalacetone and benzalacetophenone; Naphtholsulfonates (sodium salts of 2-naphthol 3,6-disulfonic and of 2-naphthol-6,8-disulfonic acids); Dihydroxy-naphtlioic acid and its salts; o- and p-Hydroxybiphenyldisulfonates; Coumarin derivatives (7-hydroxy, 7methyl 3-phenyl); Diazoles (2-acetyl-3-bromoindazole, phenyl benzoxazole, methyl naphthoxazole, various aryl benzothiazoles); Quinine salts (bisulfate, sulfate, chloride, oleate, and tannate); Quinoline derivatives (8-hydroxyquinoline salts, 2-phenylquinoline); Hydroxy- or methoxy-substituted benzophenones; Uric and vilouric acids; Tannic acid and its derivatives (e.g., hexaethylether); (Butyl carbityl) (6-propyl piperonyl) ether; Hydroquinone;
Benzophenones (Oxybenzene, Sulisobenzone, Dioxybenzone, Beazoresorcinol, 2, 2',4,4'-Tetrahydroxybenzophenone, 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone, Octabenzone; 4-Isopropyldibenzoylmethane; Butylmethoxydibenzoylmethane; 4-isopropyl-di-benzoylmethane; and camphor derivatives such as methyl benzylidene or benzylidene camphor; and mixtures thereof.Other sunscreens include the solid physical unblocks such as zinc oxide, silica, iron oxide and the like. Without being limited by theory, it is believed that these inorganic materials provide a sunscreening benefit through reflecting, scattering, and absorbing harmful Lw, visible, and infrared radiation. Of these materials the following are to be preferred:- 4-Methylbenzylidene Camphor, Homosalate, Octocrylene,
Octyl Dimethyl PABA, Octyl Methoxycinnamate, Octyl Salicylate, Octyl Triazone, Phenylbenmmidazole Sulfonic Acid, Micronised Titanium Dioxide, Benzophenone- 10, Benzophenone-3, Benzophenone-4, Benzophenone-5, Butyl Methoxydibenzoylmethane,
Isopropyl Dibennoylmethane, Menthyl Anthranilate, Micronised Zine Oxide.Particularly preferred are Octyl Methoxycinnamate, Micronised Titanium Dioxide, Benzophenone-4,
Benzophenone-5, Micronised Zinc Oxide and Octyl Dimethyl PABA. These may be included singly or in combination up to the maximum limits allowed by Annex VIII Part 1 or Annex vm Part 2 of the 76/768/EEC Directive.
Other components ofthe composition include, but are not limited to cosmetically acceptable colorants such as those listed in Annex IV Part 1 and Annex IV Part 2 of the 76/768/EEC
Directive and include both water soluble and oil soluble dyestuffs. Preferred are those classified as suitable for all cosmetic products and particularly preferred are the water or oil soluble colour additives known as CI 15985, CI 16035, CI 17200, CI 19140, CI 42053, CI 42090, CI 47005, CI 60725, CI 61565, CI 61570. Also the composition may optionally be fragranced with a suitable perfiune and it may be clear or opaque, opacity being imparted with a suitable cosmetic opacifier or by incorporating micronised zine oxide or micronised titanium dioxide. The term micronised meaning that individual particles have a mean diameter of less than 100 nm.
The viscosity of one or both phases may also be adjusted by the inclusion of a suitable thickening agent or rheology modifier which may be a natural gum like gum acacia or the result of biotechnology as exemplified by xanthan gum or a clay type such as Bentonite, a cellulose derivative such as carboxymethyl cellulose or hydroxyethyl cellulose etc., or a
Carbomer type such as Carbopol or a polymeric as exemplified by the Acrysols.Many such rheology modifiers are suitable of which the following trade names are examples; Acusol 820,
Acrysol 22, Acrysol 25, Acrysol 33, Acrysol 44, Alcoramnosan, Bentone Gel TN, Blanose
CMC 7MFD, Carbopol ETD 2001, Carbopol ETD 2020, Carbopol 940, Carbopol 1342,
Carbopol 980, Carbopol Ultrez, Chesguar C17, Chesguar C20R, Chesguar C20, Exogel,
Gilugel MIG, Gilugel Sil 5, Idroramnosan, Klucel HF, Klucel HF, CIueel 99, Laponite XLS,
Laponite XLG, Magnabrite S, Methocel E4M QG, Methocel 312, Methocel 40 202E,
Natrosol 250 HR, Natrosol 250 MR, Pemulen TR-2, Pemulen TR-1, Polargel NF, Stabileze 06 , Thixol 100-c, Veegum D, Veegum Plus, Veegum Regular, Veegum Ultra, Viscontran
MHPC, Volclay NF-BC and many others.
Examnic Formulations
The following samples were prepared in the laboratory; the SPF is that anticipated and all parts are by weight.
Table 1.
Material SPF 2 SPF 4 SPF 6 SPF 8 SPF 10 Mineral Oil 44.00% 43.00% 43.00% 38.00% 37.00% Octyl Dimethyl PABA 2.00% 3.00% 3.00% 4.00% 5.00% Oil Soluble Colour qs qs qs qs qs Octyl Methoxycinnamate 0.00% 0.00% 0.00% 5.00% 5.00% Waster 27.00% 27.00% 27.00% 26.50% 26.50% Ethanol 27.00% 27.00% 27.00% 26.50% 26.50% Water Soluble Colour qs qs qs qs qs Perfume, preservatives etc. qs qs qs qs qs qs In all cases two well defined phases were obtained which mixed well on shaking but which then separated on standing to again form two well defined layers.
Table2
ateraal SPFZ SPF4 SPF6 S?F 8 SPF10 Mineral Oil 36.00% 35.00% 35.00% 30.00% 29.00% Decyl Oleate 8.00% 8.00% 8.00% 8.00% 8.00% Octyl Dimdhyl PABA 2.00% 3.00% 3.00% 4.00% 5.00% Oil soluble colour qs qs qs qs qs Octyl Methoxycinnamate 0.00% 0.00% 0.00% 5.00% 5.00% Water 27.00% 27.00% 27.00% 26.50% 26.50% Ethanol 27.00% 27.00% 27.00% 26.50% 26.50% Water Soluble Colour qs qs qs qs qs Perfume, preservatives etc. qs qs qs qs qs qs qs In all cases two well defined phases were obtained which mixed well on shaking but which then separated on standing to again form two well defined layers.
Table3
Material SPF 2 SFF4 SPF 6 SPFS SrF 10 Mineral Oil 41.00% 40.00% 37.00% 32.00% 30.00% itanium Dioxide 40% 5.00% 8.00% 8.00% 8.00% 10.00% dispersion in mineral oil Octyl Dimethyl PABA 0.00% 0.00% 1.00% 2.00% 2.00% Oil soluble colour qs qs qs qs qs Octyl Methoxycinnamate 0.00% 0.00% 0.00% 5.00% 5.00% Water 27.00% 27.00% 27.00% 26.50% 26.50% Ethanol 27.00% 27.00% 27.00% 26.50% 26.50% Water Soluble Colour qs qs qs qs qs Perfilme, preservatives etc. qs qs qs qs qs In all cases two well defined phases were obtained which mixed well on shaking but which then separated on standing to again form two well defined layers. The upper layer was opaque.
Table 4
Material SPF6 5FF 12 SPF 15 5FF 20 SrF 25+ Mineral Oil 41.00% 40.00% 37.00% 32.00% 30.00% inc Oxide; 40% dispersion in 5.00% 5.00% 8.00% 8.00% 10.00% mineral oil Oil soluble colour qs qs qs qs qs rx Dioxide;; 40% S.00% 10.00% 15.00% 20.00% 25.00% dispersion in water.
Waster 27.00% 27.00% 27.00% 26.50% 26.50% Ethanol 27.00% 27.00% 27.00% 26.50% 26.50% Water Soluble Colour qs qs qs qs qs erfiune, preservatives etc. qs qs qs qs qs These examples are suitable for obtaining high SPF results with good to excellent UVA protection when measured by the method attributed to Dffey,B.L. and Robson,J and rated according to the star rating described in the Copyright Licence issued by Boots the Chemists
Ltd. When made in the laboratory two layers were obtained, well defined by the differences in colour, the layers proved easy to disperse, one in the other, by shaking and regained their two layer appearance on standing.
Claims (10)
1. A sun protective product consisting oftwo separate layers.
2. The composition in Claim 1 wherein one layer is an oil and another is an aqueous
alcoholic mixture.
3. The composition in Claims 1 and 2 in which are dissolved known Lw absorbers for
protection against UVB radiation.
4. The composition in Claims 1, 2 and 3 in which are dissolved known Lw absorbers for
protection against WA radiation.
5. The composition in Claims 1, 2, 3 and 4 in which the Lw absorber or screening agent
is Octyl Methoxycinnamate, Micronised Titanium Dioxide, Benzophenone-4,
Benzophenone-5, Micronised Zinc Oxide, Octyl Dimethyl PABA, either singly or in
combination.
6. The composition in Claims 1, 2, 3, 4 and 5 in which the SPF value ranges from SPF2
to SPF25+ when measured either in-vivo or in-vitro.
7. The composition in Claims 1, 2, 3, 4, 5 and 6 in which the WA protection rating
ranges from moderate to good according to the star rating described in the Copyright
Licence issued by Boots the Chemists Ltd
8. The composition in Claims 1, 2, 3, 4, 5, 6 and 7 wherein the two layers are coloured by
cosmetically acceptable colour additives.
9. The composition in Claims 1, 2, 3, 4, 5, 6, 7 and 8 wherein the pH ofthe composition
is within the range 4.5 - 8.5.
10. The composition in Claims 1, 2, 3, 4, 5, 6, 7, 8 and 9 wherein the viscosity is within
the range 10cups to 10,000 cps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9525633A GB2308063A (en) | 1995-12-15 | 1995-12-15 | Two phase sun protection product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9525633A GB2308063A (en) | 1995-12-15 | 1995-12-15 | Two phase sun protection product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9525633D0 GB9525633D0 (en) | 1996-02-14 |
| GB2308063A true GB2308063A (en) | 1997-06-18 |
Family
ID=10785458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9525633A Withdrawn GB2308063A (en) | 1995-12-15 | 1995-12-15 | Two phase sun protection product |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2308063A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9132078B2 (en) | 1998-05-07 | 2015-09-15 | E-L Management Corp. | Dual phase cosmetic composition |
| EP3265051B1 (en) | 2015-03-06 | 2020-06-24 | NAOS Les Laboratoires | Aqueous sun-related cosmetic composition free of surfactants |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920883A (en) * | 1972-11-15 | 1975-11-18 | Shiseido Co Ltd | Liquid cosmetic composition of a two-phase type |
| EP0490750A1 (en) * | 1990-12-12 | 1992-06-17 | L'oreal | Liquid two-phase cosmetic composition containing at least a dialkylphthalate, insoluble particulates and a density equilibrating agent |
| GB2278055A (en) * | 1993-04-14 | 1994-11-23 | Tioxide Specialties Ltd | Compositions containing sunscreens |
| US5468496A (en) * | 1992-12-18 | 1995-11-21 | L'oreal | Two-phase cosmetic or dermatological composition |
-
1995
- 1995-12-15 GB GB9525633A patent/GB2308063A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920883A (en) * | 1972-11-15 | 1975-11-18 | Shiseido Co Ltd | Liquid cosmetic composition of a two-phase type |
| EP0490750A1 (en) * | 1990-12-12 | 1992-06-17 | L'oreal | Liquid two-phase cosmetic composition containing at least a dialkylphthalate, insoluble particulates and a density equilibrating agent |
| US5468496A (en) * | 1992-12-18 | 1995-11-21 | L'oreal | Two-phase cosmetic or dermatological composition |
| GB2278055A (en) * | 1993-04-14 | 1994-11-23 | Tioxide Specialties Ltd | Compositions containing sunscreens |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9132078B2 (en) | 1998-05-07 | 2015-09-15 | E-L Management Corp. | Dual phase cosmetic composition |
| EP3265051B1 (en) | 2015-03-06 | 2020-06-24 | NAOS Les Laboratoires | Aqueous sun-related cosmetic composition free of surfactants |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9525633D0 (en) | 1996-02-14 |
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