Process for dyeing, with a lightening effect, human keratin fibers that have been permanently reshaped, using at least one composition comprising at least one fluorescent dye

• US 20050005368A1
• Filed: 04/01/2004
• Published: 01/13/2005
• Est. Priority Date: 04/01/2003
• Status: Active Grant

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: Samain, Henri, Plos, Gregory
• Granted Patent: US 7,195,650 B2
• Time in Patent Office: Days
• US Class Current: 8/405
• CPC Class Codes: A61K 8/411 Aromatic amines, i.e. where the amino group is directly linked to the aromatic nucleus
• CPC Class Codes: A61K 8/4926 having six membered rings
• CPC Class Codes: A61K 8/4946 Imidazoles or their condensed derivatives, e.g. benzimidazoles
• CPC Class Codes: A61K 8/498 having 6-membered rings or their condensed derivatives, e.g. coumarin
• CPC Class Codes: A61Q 5/04 Preparations for permanent waving or straightening the hair
• CPC Class Codes: A61Q 5/10 Preparations for permanently dyeing the hair

Abstract

A process for dyeing keratin fibers that have previously undergone a permanent reshaping process, comprising applying at least one composition comprising, in a cosmetically acceptable medium, at least one fluorescent dye that is soluble in the medium. The use of the at least one composition may makes it possible to dye a human keratin material, and further, for example, artificially dyed or pigmented hair, with a lightening effect.

Claims

1. A process for dyeing, with a lightening effect, human keratin fibers that have previously been subjected to a permanent reshaping process, comprising:

a) applying to said keratin fibers at least one composition comprising, in a cosmetically acceptable medium, at least one fluorescent dye that is soluble in the medium;

b) leaving the at least one composition on the keratin fibers to act for a time period sufficient to develop desired coloration and lightening;

b) optionally rinsing the keratin fibers;

c) optionally washing the keratin fibers with shampoo and optionally rinsing the keratin fibers; and

d) drying or leaving to dry the keratin fibers.

2. The process according to claim 1, wherein the at least one fluorescent dye has a reflectance maximum in the wavelength range of from 500 nm to 650 nm.

3. The process according to claim 2, wherein the at least one fluorescent dye has a reflectance maximum that is in the wavelength range of from 550 nm to 620 nm.

4. The process according to claim 1, wherein the at least one fluorescent dye is chosen from dyes in the orange range.

5. The process according to claim 1, wherein the at least one fluorescent dye is chosen from naphthalimides;

cationic and non-cationic coumarins;

xanthenodiquinolizines;

azaxanthenes;

naphtholactams;

azlactones;

oxazines;

thiazines;

dioxazines; and

azo, azomethine and methine monocationic and polycationic fluorescent dyes.

6. The process according to claim 1, wherein the at least one fluorescent dye is chosen from the following compounds:

7. The process according to claim 6, wherein, in formula (F1), X⁻

is chosen from iodide, sulphate, and methosulphate anions.

8. The process according to claim 7, wherein, in formula (F4), R₁ and R₂, which may be identical or different, are each chosen from linear and branched alkyl radicals comprising from 1 to 4 carbon atoms.

9. The process according to claim 8, wherein, in formula (F4), the heterocycle formed from R₁ and R₂ and the nitrogen to which they are attached, is optionally substituted with at least one alkyl radical chosen from linear and branched alkyl radicals comprising from 1 to 4 carbon atoms.

10. The process according to claim 1, wherein the at least one fluorescent dye is present in an amount ranging from 0.01% to 20% by weight, relative to the total weight of the at least one composition.

11. The process according to claim 10, wherein the at least one fluorescent dye is present in an amount ranging from 0.05% to 10% by weight, relative to the total weight of the at least one composition.

12. The process according to claim 11, wherein the at least one fluorescent dye is present in an amount ranging from 0.1% to 5% by weight, relative to the total weight of the at least one composition.

13. The process according to claim 1, wherein the at least one fluorescent dye is soluble in the medium of the at least one composition to at least 0.001 g/l at a temperature ranging from 15 to 25°

C.

14. The process according to claim 13, wherein the at least one fluorescent dye is soluble in the medium of the at least one composition to at least 0.5 g/l at a temperature ranging from 15 to 25°

C.

15. The process according to claim 14, wherein the at least one fluorescent dye is soluble in the medium of the at least one composition to at least 1 g/l at a temperature ranging from 15 to 25°

C.

16. The process according to claim 15, wherein the at least one fluorescent dye is soluble in the medium of the at least one composition to at least 5 g/l at a temperature ranging from 15 to 25°

C.

17. The process according to claim 1, wherein the at least one composition further comprises at least one surfactant chosen from nonionic, anionic and amphoteric surfactants.

18. The process according to claim 17, wherein the at least one surfactant is present in an amount ranging from 0.01% to 30% by weight, relative to the total weight of the at least one composition.

19. The process according to claim 1, wherein the at least one composition further comprises at least one additional non-fluorescent direct dye chosen from nonionic, cationic and anionic non-fluorescent direct dyes.

20. The process according to claim 1, wherein the at least one additional non-fluorescent direct dye is chosen from nitrobenzene dyes, azo dyes, anthraquinone dyes, naphthoquinone dyes, benzoquinone dyes, phenothiazine dyes, indigoid dyes, xanthene dyes, phenanthridine dyes, phthalocyanin dyes, and triarylmethane-based dyes.

21. The process according to claim 20, wherein the at least one additional non-fluorescent direct dye is present in an amount ranging from 0.0005% to 12% by weight, relative to the total weight of the at least one composition.

22. The process according to claim 21, wherein the at least one additional non-fluorescent direct dye is present in an amount ranging from 0.005% to 6% by weight, relative to the total weight of the at least one composition.

23. The process according to claim 1, wherein the at least one composition is provided in a form of a lightening dyeing shampoo.

24. The process according to claim 1, comprising, before applying the at least one composition to the keratin fibers:

a) applying at least one alkaline aqueous composition with a pH of at least 10 to the keratin fibers, while smoothing out the keratin fibers;

b) leaving the at least one alkaline aqueous composition on the keratin fibers for a time period that is sufficient to shape the keratin fibers; and

c) optionally rinsing the keratin fibers, washing the keratin fibers with shampoo, rinsing the keratin fibers again, and optionally drying the keratin fibers.

25. The process according to claim 1, comprising, before applying the at least one composition to the keratin fibers:

a) applying at least one reducing composition comprising, in a cosmetically acceptable medium, at least one reducing agent to the keratin fibers;

b) leaving the at least one reducing composition on the keratin fibers for a time period that is sufficient to shape them;

c) rinsing the keratin fibers;

d) applying at least one oxidizing composition;

e) leaving the at least one oxidizing composition on the keratin fibers for a time period that is sufficient to fix the shape of the keratin fibers; and

f) optionally rinsing the keratin fibers, washing the keratin fibers with shampoo, rinsed the keratin fibers and optionally drying the keratin fibers.

26. The process according to claim 1, wherein the at least one composition is applied to hair with a tone height of less than or equal to 6.

27. The process according to claim 26, wherein the at least one composition is applied to hair with a tone height of less than or equal to 4.

28. The process according to claim 1, wherein the human keratin fibers are artificially dyed or pigmented.