COMPOSITION COMPRISING A NATURAL DYE, A HYDRAZONO AND/OR AZO CATIONIC SYNTHETIC DIRECT DYE AND AN AROMATIC COMPOUND

Abstract

The present invention relates to an anhydrous composition for dyeing human keratin fibers, comprising at least one natural dye, at least one hydrazono and/or azo cationic synthetic direct dye and at least one compound of formula (I) in which Y represents a C.sub.1-C.sub.4 hydroxyalkyl group or a C.sub.1-C.sub.4 hydroxyalkyloxy radical, n denotes an integer ranging from 0 to 5, and X, which may be identical or different, represents a C.sub.1-C.sub.4 alkyl radical or a halogen. The invention also relates to a process for dyeing human keratin fibers using this composition.

##STR00001##

Claims

1-15. (canceled)

16. An anhydrous composition for dyeing keratin fibers comprising: at least one natural dye, at least one dye chosen from hydrazono cationic synthetic direct dyes and/or azo cationic synthetic direct dyes; and at least one aromatic compound of formula (I), ##STR00010## wherein in formula (I): Y represents a C.sub.1-C.sub.4 hydroxyalkyl group or a C.sub.1-C.sub.4 hydroxyalkyloxy radical, n represents an integer ranging from 0 to 5, and X, which may be identical or different, represents a C.sub.1-C.sub.4 alkyl radical or a halogen.

17. The composition of claim 16, wherein the at least one natural dye is chosen from lawsone, henna extracts, henna powders, Cassia angustifolia extracts, Cassia angustifolia powders, indigo, indigo-producing plant extracts, indigo-producing plant powders, or mixtures thereof.

18. The composition of claim 16, wherein the total amount of the at least one natural dye ranges from 40% to 98% by weight, relative to the total weight of the composition.

19. The composition of claim 16, wherein the at least one dye chosen from hydrazono cationic synthetic direct dyes and/or azo cationic direct dyes are chosen from: dyes of hydrazono type of formulae (II) and (III), bearing an endocyclic cationic charge; dyes of azo type of formula (IV), bearing an endocyclic cationic charge; dyes of azo type of formula (V), bearing an exocyclic cationic charge; or mixtures thereof: ##STR00011## wherein: Het.sup.+ represents a cationic heteroaryl radical, which is optionally substituted with at least one (C.sub.1-C.sub.8) alkyl group; Ar.sup.+ represents an aryl radical bearing an exocyclic cationic charge; Ar represents an aryl group, which is optionally substituted with one or more electron-donating groups, or alternatively, Ar represents a julolidine group; Ar″ represents an optionally substituted (hetero)aryl group; R.sub.a and R.sub.b, which may be identical or different, represent a hydrogen atom or a (C.sub.1-C.sub.8)alkyl group which is optionally substituted with a hydroxyl group; or the substituent R.sub.a with a substituent of Het.sup.+, and/or R.sub.b with a substituent of Ar form, together with the atoms which bear them, a (hetero)cycloalkyl group; and Q.sup.− represents an organic or mineral anionic counterion.

20. The composition of claim 16, wherein the at least one dye is chosen from Basic Yellow 87, Basic Red 51, Basic Orange 31, or mixtures thereof.

21. The composition of claim 16, wherein the total amount of the at least one dye chosen from hydrazono cationic synthetic direct dyes and/or azo cationic synthetic direct dyes ranges from 0.01% to 20% by weight, relative to the total weight of the composition.

22. The composition of claim 16, wherein the compounds of formula (I) are chosen from benzyl alcohol, phenylethanol and phenoxyethanol, or mixtures thereof.

23. The composition of claim 16, wherein the total amount of the at least one aromatic compound of formula (I) ranges from 0.1% to 20% by weight, relative to the total weight of the composition.

24. The composition of claim 16, further comprising at least one additional synthetic direct dye.

25. The composition of claim 24, wherein the at least one additional synthetic direct dye is chosen from triarylmethane, nitro(hetero)aryl dyes, anthraquinone dyes, or mixtures thereof.

26. The composition of claim 24, wherein the at least one additional synthetic direct dye is chosen from HC Blue 15, Basic Violet 2, HC Blue 2, HC Blue 16, or mixtures thereof.

27. The composition of claim 24, wherein the total amount of the at least one additional synthetic direct dye ranges from 0.01% to 15% by weight, relative to the total weight of the composition.

28. The composition of claim 16, further comprising at least one oil.

29. The composition of claim 28, wherein the at least one oil is chosen from avocado oil, olive oil, coconut oil, argan oil, sunflower oil, or mixtures thereof.

30. The composition of claim 28, wherein the total amount of the at least one oil ranges from 0.1% to 20% by weight, relative to the total weight of the composition.

31. The composition of claim 16, further comprising at least one (poly)saccharide.

32. The composition of claim 31, wherein the at least one (poly)saccharide is chosen from gums.

33. The composition of claim 31, wherein the total amount of the at least one (poly)saccharide ranges from 0.05% to 10% by weight, relative to the total weight of the composition.

34. A process for dyeing keratin fibers, comprising: applying to the keratin fibers a composition resulting from extemporaneous mixing at the time of use an anhydrous composition (A) and an aqueous composition (B), wherein the mixing ratio between the anhydrous composition (A) and the aqueous composition (B) ranges from 0.01 to 10; wherein the anhydrous composition (A) comprises: at least one natural dye; at least one dye chosen from hydrazono cationic synthetic direct dyes and/or azo cationic synthetic direct dyes; and at least one aromatic compound chosen from compounds of formula (I), ##STR00012## wherein in formula (I): Y represents a C.sub.1-C.sub.4 hydroxyalkyl group or a C.sub.1-C.sub.4 hydroxyalkyloxy radical, n represents an integer ranging from 0 to 5, and X, which may be identical or different, represents a C.sub.1-C.sub.4 alkyl radical or a halogen.

35. A process of claim 34, wherein the aqueous composition (B) is water.

Description

EXAMPLES

Comparative Tests 1

[0270] Compositions A and B were prepared. The proportions of the ingredients are indicated as grams of active material per 100 grams of composition.

[0271] Compostions According to the Invention and Comparative Compostions:

TABLE-US-00001 TABLE 1 A B Ingredients (inv) (comp) Cassia angustifolia powder 83.5 83.5 Basic Yellow 87 3 — 3-Methylamino-4- — 3 nitrophenoxyethanol HC Blue 2 3 3 Coconut oil 2.5 2.5 Benzyl alcohol 8 8

[0272] Composition B comprises a yellow dye which is not a hydrazono and/or azo cationic synthetic direct dye but a nitrobenzene dye.

[0273] At the time of use, each of the dye compositions A and B is mixed with three times its own weight of water at 100° C.

[0274] Each of the mixtures is then applied to locks of natural hair containing 90% white hairs, at a rate of 10 g of mixture per 1 g of hair.

[0275] After leaving it on plates thermostatically maintained at 33° C. for 30 minutes, the hair is rinsed and dried.

[0276] Evaluation of the Coloring

[0277] The coloring of the hair is evaluated in the L*a*b* system, using a Minolta CM 3600D spectrocolorimeter (illuminant D65, angle 10°, specular component included).

[0278] In this system, L* represents the lightness. The smaller the value of L*, the darker and more powerful the coloring obtained. The chromaticity is measured by the values a* and b*, a* representing the red/green axis and b* the yellow/blue axis.

[0279] The color buildup is represented by the color difference ΔE between the undyed lock and the dyed lock: the greater the value of ΔE, the greater the color buildup. This value is calculated from the following equation (i):

ΔE=√{square root over ((L*−L.sub.o*).sup.2+(a*−a.sub.o*).sup.2+(b*−b.sub.o*).sup.2)}  (i)

[0280] In the equation (i), L*, a* and b* represent the values measured on locks of undyed hair and L.sub.0*, a.sub.0* and b.sub.0* represent the values measured on locks of dyed hair.

[0281] Dyeing Results

[0282] The colorimetric values and the color buildup A E are listed in the table below:

[0283] Very good color buildup was obtained on the locks of hair treated using the composition according to the invention, which is confirmed by the colorimetric measurements below.

TABLE-US-00002 TABLE 2 Composition L* a* b* ΔE before dyeing 58.64 1.26 12.76 — Composition A (inv) 32.75 −0.04 16.48 26.19 Composition B 35.63 0.18 13.89 23.07

[0284] The above results show that better color buildup and more powerful coloring were obtained using composition A according to the invention, relative to comparative composition B.

Comparative Tests 2

[0285]

TABLE-US-00003 TABLE 3 C D E Ingredients (inv) (comp) (comp) Cassia angustifolia leaf 88.2 88.2 88.2 powder, sold by the company Kankor HC Blue 15 0.3 0.3 0.3 Basic Red 51 1 1 1 Coconut oil 2.5 2.5 2.5 Benzyl alcohol 8 Ethanol 8 Propylene glycol 8

[0286] Compositions D and E do not contain any aromatic compound of formula (I).

[0287] At the time of use, each of the dye compositions C, D and E is mixed with three times its weight of water at 100° C.

[0288] Each of the mixtures is then applied to locks of natural hair containing 90% white hairs, at a rate of 10 g of mixture per 1 g of hair.

[0289] After leaving it on plates thermostatically maintained at 33° C. for 30 minutes, the hair is rinsed and dried.

[0290] The dyeing performance is evaluated in the same manner as previously.

[0291] The results obtained are as follows:

TABLE-US-00004 TABLE 4 Composition L* a* b* ΔE before dyeing 60.12 2.18 16.48 — Composition C (inv) 31.90 20.04 −5.76 40.13 Composition D 37.58 19.20 −4.47 35.17 Composition E 38.35 21.10 −5.49 36.27

[0292] Composition C according to the invention results in better color buildup and in more powerful coloring, relative to comparative compositions D and E.