US4832943A — Composition for coloring skin

Claim 1

Independent Claim 85 words

A two-component pack containing a composition for coloring or artificially tanning skin comprising two components (a) and (b) intended to be mixed at the time of use or to be applied to the skin successively wherein component (a) comprises meso-tartaraldehyde in the form of an aqueous solution, an aqueous gel or an aqueous emulsion, and component (b) comprises at least one hydroxyquinone, which is 2,5-dihydroxy-3-methyl-1,4-benzoquinone, 2,5-dihydroxy-3-methyl-6-methoxy-1,4-benzoquinone, 2-hydroxy-1,4-naphthoquinone, 2-hydroxy-3-methoxy-1,4-naphthoquinone, 2,5-dihydroxy-1,4-naphthoquinone, 2,5-dihydroxy-3-methyl-1,4-naphthoquinone, 5-hydroxy-1,4-naphthoquinone, 5,8-dihydroxy-1,4-naphthoquinone, 2-methoxy-5-hydroxy-1,4-naphthoquinone, or 2,5,8-trihydroxy-1,4-naphthoquinone, in the form of an anhydrous solution or a powder.

Claim 2

Dependent Claim 85 words

A two-component pack containing a composition for coloring or artificially tanning skin comprising two components (a) and (b) intended to be mixed at the time of use or to be applied to the skin successively wherein component (a) comprises meso-tartaraldehyde in the form of an aqueous solution, an aqueous gel or an aqueous emulsion, and component (b) comprises at least one hydroxyquinone, which is 2,5-dihydroxy-3-methyl-1,4-benzoquinone, 2,5-dihydroxy-3-methyl-6-methoxy-1,4-benzoquinone, 2-hydroxy-1,4-naphthoquinone, 2-hydroxy-3-methoxy-1,4-naphthoquinone, 2,5-dihydroxy-1,4-naphthoquinone, 2,5-dihydroxy-3-methyl-1,4-naphthoquinone, 5-hydroxy-1,4-naphthoquinone, 5,8-dihydroxy-1,4-naphthoquinone, 2-methoxy-5-hydroxy-1,4-naphthoquinone, or 2,5,8-trihydroxy-1,4-naphthoquinone, in the form of an anhydrous solution or a powder.

Claim 3

Dependent Claim 84 words

A pack according to claim 1 wherein component (b) is in the form of an anhydrous solution wherein the solvent is a saturated monohydric alcohol having from 1 to 4 carbon atoms, a saturated long-chain monohydric alcohol having from 10 to 18 carbon atoms, a polyol having from 2 to 8 carbon atoms, a glycol ether, an acetic acid ester of an ethylene glycol mono(C 1-3 )alkyl ether, or an ester of a C 4-16 saturated fatty acid and a saturated C 1-4 -alcohol.

Claim 4

Dependent Claim 30 words

A pack according to claim 2 wherein the solvent is selected from the group consisting of ethanol, cetyl alcohol, propylene glycol, ethylene glycol monoethyl ether and ethylene glycol monobutyl ether.

Claim 5

Dependent Claim 16 words

A pack according to claim 1 wherein component (b) is in the form of a powder.

Claim 6

Dependent Claim 43 words

A pack according to claim 1, wherein component (a) comprises from 0.2 to 4% by weight of meso-tartaraldehyde and component (b) comprises from 0.02 to 1% by weight of the hydroxyquinone, both being relative to the total weight of components (a) and (b).

Claim 7

Dependent Claim 26 words

A pack according to claim 1, wherein the pH of component (a) comprising an aqueous solution or aqueous emulsion of meso-tartaraldehyde is from 3 to 8.5.

Claim 8

Dependent Claim 14 words

A pack according to claim 6 wherein the pH is from 4 to 6.5.

Claim 9

Dependent Claim 27 words

A pack according to claim 1, wherein the pH of the composition prepared by mixing all of components (a) and (b) together is from 3 to 7.

Claim 10

Dependent Claim 40 words

A pack according to claim 1, wherein component (a) or component (b) or both comprise at least one adjuvant which is a surfactant, thickener, fatty alcohol, fatty acid ester, mineral, vegetable or animal oil, perfume, preservative or UV-ray filtering agent.

Claim 11

Dependent Claim 25 words

A pack according to claim 1, wherein the form of the composition produced by mixing components (a) and (b) is a solution, emulsion or gel.

Claim 12

Dependent Claim 81 words

A two stage process for coloring or artificially tanning skin, which comprises applying to skin successively a component (a) and a component (b) or a component (b) and a component (a), component (a) comprising meso-tartaraldehyde in the form of an aqueous solution, an aqueous gel or an aqueous emulsion, and component (b) comprising a hydroxyquinone or hydroxyquinones selected fron the group consisting of 2,5-dihydroxy-3-methyl-1,4-benzoquinone, 2,5-dihydroxy-3-methyl-6-methoxy-1,4-benzoquinone, 2-hydroxy-1,4-naphthoquinone, 2-hydroxy-3-methoxy-1,4-naphthoquinone, 2,5-dihydroxy-1,4-naphthoquinone, 2,5-dihydroxy-3-methyl-1,4-naphthoquinone, 5-hydroxy-1,4-naphthoquinone, 5,8-dihydroxy-1,4-naphthoquinone, 2-methoxy-5-hydroxy-1,4-naphthoquinone, and 2,5,8-trihydroxy-1,4-naphthoquinone, in the form of an anhydrous solution.

Claim 13

Dependent Claim 81 words

A two stage process for coloring or artificially tanning skin, which comprises applying to skin successively a component (a) and a component (b) or a component (b) and a component (a), component (a) comprising meso-tartaraldehyde in the form of an aqueous solution, an aqueous gel or an aqueous emulsion, and component (b) comprising a hydroxyquinone or hydroxyquinones selected fron the group consisting of 2,5-dihydroxy-3-methyl-1,4-benzoquinone, 2,5-dihydroxy-3-methyl-6-methoxy-1,4-benzoquinone, 2-hydroxy-1,4-naphthoquinone, 2-hydroxy-3-methoxy-1,4-naphthoquinone, 2,5-dihydroxy-1,4-naphthoquinone, 2,5-dihydroxy-3-methyl-1,4-naphthoquinone, 5-hydroxy-1,4-naphthoquinone, 5,8-dihydroxy-1,4-naphthoquinone, 2-methoxy-5-hydroxy-1,4-naphthoquinone, and 2,5,8-trihydroxy-1,4-naphthoquinone, in the form of an anhydrous solution.

Claim 14

Dependent Claim 76 words

A process for coloring or artificially tanning skin, which comprises applying to skin a composition obtained by mixing immediately before use a component (a) comprising meso-tartaraldehyde in the form of an aqueous solution, an aqueous gel or an aqueous emulsion and a component (b) comprising a hydroxyquinone or hydroxyquinones selected from the group consisting of 2,5-dihydroxy-3-methyl-1,4-benzoquinone, 2,5-dihydroxy-3-methyl-6-methoxy-1,4-benzoquinone, 2-hydroxy-1,4-naphthoquinone, 2-hydroxy-3-methoxy-1,4-naphthoquinone, 2,5-dihydroxy-1,4-naphthoquinone, 2,5-dihydroxy-3-methyl-1,4-naphthoquinone, 5-hydroxy-1,4-naphthoquinone, 5,8-dihydroxy-1,4-naphthoquinone, 2-methoxy-5-hydroxy-1,4-naphthoquinone, and 2,5,8-trihydroxy-1,4-naphthoquinone, in the form of an anhydrous solution or a power.

Claim 15

Dependent Claim 76 words

A process for coloring or artificially tanning skin, which comprises applying to skin a composition obtained by mixing immediately before use a component (a) comprising meso-tartaraldehyde in the form of an aqueous solution, an aqueous gel or an aqueous emulsion and a component (b) comprising a hydroxyquinone or hydroxyquinones selected from the group consisting of 2,5-dihydroxy-3-methyl-1,4-benzoquinone, 2,5-dihydroxy-3-methyl-6-methoxy-1,4-benzoquinone, 2-hydroxy-1,4-naphthoquinone, 2-hydroxy-3-methoxy-1,4-naphthoquinone, 2,5-dihydroxy-1,4-naphthoquinone, 2,5-dihydroxy-3-methyl-1,4-naphthoquinone, 5-hydroxy-1,4-naphthoquinone, 5,8-dihydroxy-1,4-naphthoquinone, 2-methoxy-5-hydroxy-1,4-naphthoquinone, and 2,5,8-trihydroxy-1,4-naphthoquinone, in the form of an anhydrous solution or a power.

Claim 16

Dependent Claim 14 words

A process according to claim 11, wherein component (b) is applied before component (a).

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1992-05-22	1992-11-21	1993-05-23	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1996-05-22	1996-11-21	1997-05-23	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2000-05-22	2000-11-21	2001-05-23	$7700.00	Window Closed / Lapsed

Composition for coloring skin

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