Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
• • 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
  • A61K8/25—Silicon; Compounds thereof
• • 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
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/42—Colour properties
  • A61K2800/43—Pigments; Dyes
  • A61K2800/436—Interference pigments, e.g. Iridescent, Pearlescent

Definitions

• the present invention relates to the field of topical compositions for improving the appearance and feel of human skin. More particularly, the invention relates to topical compositions which provide good coverage of skin imperfections, e.g., pores and uneven skin tone, while retaining a natural skin appearance.
• the compositions of the invention are especially useful for the cosmetic treatment of non-facial parts of the body, especially the hands.
• Topical cosmetic compositions such as skin creams and lotions and the like, can be designed to deliver a variety of post-application benefits to the skin, such as moisturisation, skin protection and improvements to skin feel and appearance.
• benefits may be entirely cosmetic or may be delivered by the use of chronically acting actives which are capable of regulating skin condition, including regulating fine lines, wrinkles and other forms of uneven or rough surface texture associated with aged or photodamaged skin.
• skin products will not only deliver benefits on a longer time scale but will also effect immediately noticeable improvements such as enhanced skin smoothness.
• products have excellent in- use aesthetics i.e. that they can readily be rubbed in without feeling greasy or sticky.
• the present invention also relates to cosmetic methods of improving skin feel and appearance, in particular for providing a more even skin tone, by topical application of the subject compositions.
• compositions are useful for imparting an essentially immediate visual improvement in skin appearance and feel while maintaining a natural skin appearance.
• optically neutral means that when a material is applied to the skin by itself it effects no net colour change other than a possible lightening or darkening of tone.
• ⁇ a and ⁇ b colour shift values defined herein in the section headed 'Green Pigments' will each have a magnitude no greater than one unit, more preferably no greater than one half of one unit, for an optically neutral material.
• Such materials will normally be colourless, white or off-white in bulk appearance.
• compositions useful in the subject invention may be made into a variety of product forms such as are known in the art.
• Preferred compositions have a sufficient thickness or yield point to resist sedimentation of the particulates.
• the diluent is preferably liquid. Water is an especially preferred diluent.
• the composition preferably comprises at least about 60%> of the hydrophilic diluent.
• the emulsion may be or comprise (e.g., in a triple or other multi-phase emulsion) an oil-in-water emulsion or a water-in-oil emulsion such as a water-in-silicone emulsion.
• Preferred subclasses include kaolonite, montmorillonite, talc and mica. Most preferred are talc and mica, especially mica.
• the layer structure of the phyllosilicates gives a smooth feeling upon application to the skin.
• the most preferred materials from the point of view of appearance and skin feel are optically neutral titanium coated micas. These optically neutral titanium coated micas are commercially available and suitable materials include Microna Matte White, available from Rona, a subsidiary of Merck.
• Optional components include emollients, oil absorbents, antimicrobial agents, binders, buffering agents, denaturants, cosmetic astringents, external analgesics, film formers, humectants, opacifying agents, perfumes, pigments, skin soothing and healing agents, preservatives, propellants, skin penetration enhancers, solvents, suspending agents, emulsifiers, cleansing agents, thickening agents, solubilising agents, waxes, sunscreens, sunless tanning agents, antioxidants and/or radical scavengers, chelating agents, anti-acne agents, anti-inflammatory agents, desquamation agents/exfoliants, organic hydroxy acids, vitamins and natural extracts.
• Suitable nylon particles are commercially available from Elf Atochem SA, Paris, France under the tradename Orgasol®.
• the compositions may contain other inorganic or organic particulate materials. However, it is preferred that the organic particulates in the compositions of the invention consist essentially of the particulate material described in this section entitled "Organic Particulate Material.”
• the vitamin B3 compound may be included as the substantially pure material, or as an extract obtained by suitable physical or chemical isolation from natural (e.g., plant) sources.
• the vitamin B3 compound is preferably substantially pure i.e. substantially free of impurities arising from the original source.
• Substantially pure compounds can be provided in solution, optionally with an anti-oxidant or other stabiliser.
• Suitable organopolysiloxanes can be selected from a wide variety of silicones spanning a broad range of volatilities and viscosities. Non-volatile polysiloxanes are preferred. Suitable silicones are disclosed in U.S. Patent No. 5,069,897, issued December 3, 1991. Preferred for use herein are organopolysiloxanes selected from the group consisting of polyalkylsiloxanes, alkyl substituted dimethicones, dimethiconols, poly- alkylaryl siloxanes, and mixtures thereof. More preferred for use herein are polyalkylsiloxanes and cyclomethicones. Preferred among the polyalkylsiloxanes are dimethicones.
• C4-C20 alkyl ethers of polypropylene glycols C1-C20 carboxylic acid esters of polypropylene glycols, and di-Cg-C3o alkyl ethers, examples of which include PPG- 14 butyl ether, PPG- 15 stearyl ether, dioctyl ether, dodecyl octyl ether, and mixtures thereof.
• nonionic surfactants are the condensation products of alkylene oxides with both fatty acids and fatty alcohols [i.e. wherein the polyalkylene oxide portion is esterified on one end with a fatty acid and etherified (i.e. connected via an ether linkage) on the other end with a fatty alcohol].
• RCO(X) n OR' wherein R and R' are CIQ-30 alkyl groups, X is -OCH2CH2 (i.e.
• compositions of the present invention can also comprise a skin lightening agent.
• the compositions preferably comprise from about 0.1%> to about 10%>, more preferably from about 0.2% to about 5%, also preferably from about 0.5% to about 2%, of a skin lightening agent.
• Suitable skin lightening agents include those known in the art, including kojic acid, arbutin, ascorbic acid and derivatives thereof, e.g., magnesium ascorbyl phosphate.
• Further skin lightening agents suitable for use herein also include those described in WO 95/34280 and WO 95/23780.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Cosmetics (AREA)

Applications Claiming Priority (5)

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• 2001
  • 2001-01-18 EP EP01904937A patent/EP1248589A2/de not_active Withdrawn
  • 2001-01-18 JP JP2001552844A patent/JP2003520217A/ja active Pending
  • 2001-01-18 AU AU2001232866A patent/AU2001232866A1/en not_active Abandoned
  • 2001-01-18 CN CN 01803849 patent/CN1396817A/zh active Pending
  • 2001-01-18 WO PCT/US2001/001827 patent/WO2001052795A2/en not_active Application Discontinuation
  • 2001-01-18 MX MXPA02007045A patent/MXPA02007045A/es unknown

Non-Patent Citations (1)

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