Dyeing or lightening process using a composition rich in fatty substances comprising a solid alcohol and a solid ester, compositions and device

1. A process for dyeing or lightening human keratin fibers comprising:

(i) mixing at the time of use

(a) a composition (A) in direct emulsion form, comprising:

at least about 30% by weight of at least one oil,

at least one fatty alcohol that is solid at room temperature and at atmospheric pressure,

at least one fatty ester that is solid at room temperature and at atmospheric pressure,

at least one surfactant, and

at least one basifying agent and/or at least one dye chosen from oxidation dyes, direct dyes, and mixtures thereof, and

(b) a composition (B) comprising at least one oxidizing agent; and

(ii) applying the mixture to the human keratin fibers

wherein the resultant mixture comprises at least about 25% by weight of fatty substances relative to the total weight of the mixture (A)+(B).

2. The process according to claim 1 , wherein the at least one oil is present in an amount of at least about 50% by weight, relative to the total weight of composition (A).

3. The process according to claim 1 , wherein the at least one oil is chosen from C 6 -C 16 lower alkanes; non-silicone oils of animal origin; glycerides of plant and synthetic origin; linear and branched hydrocarbons of mineral and synthetic origin containing more than 16 carbon atoms; fluoro oils; liquid fatty alcohols; liquid fatty esters; non-salified liquid fatty acids; silicone oils; and mixtures thereof.

4. The process according to claim 1 , wherein the at least one oil is chosen from liquid petroleum jelly, polydecenes, octyldodecanol, isostearyl alcohol, and mixtures thereof.

5. The process according to claim 1 , wherein the at least one solid fatty alcohol is chosen from lauryl alcohol (1-dodecanol), myristyl alcohol (1-tetradecanol), cetyl alcohol (1-hexadecanol), stearyl alcohol (1-octadecanol), behenyl alcohol (1-docosanol), arachidyl alcohol (1-eicosanol), lignoceryl alcohol (1-tetracosanol), ceryl alcohol (1-hexacosanol), montanyl alcohol (1-octacosanol), myricyl alcohol (1-triacontanol), and mixtures thereof.

6. The process according to claim 1 , wherein the at least one solid fatty alcohol is present in an amount ranging from about 0.2% to about 20% by weight, relative to the total weight of composition (A) and/or the mixture (A)+(B).

7. The process according to claim 1 , wherein the at least one solid fatty alcohol is present in an amount ranging from about 1% to about 10% by weight, relative to the total weight of composition (A) and/or the mixture of composition (A) and composition (B).

8. The process according to claim 1 , wherein the at least one solid fatty ester is chosen from esters of optionally hydroxylated saturated carboxylic acids comprising at least 10 carbon atoms and esters of saturated fatty monoalcohols comprising at least 10 carbon atoms.

9. The process according to claim 1 , wherein the at least one solid fatty ester is chosen from myristyl myristate, cetyl myristate, stearyl myristate, myristyl palmitate, cetyl palmitate, stearyl palmitate, myristyl stearate, cetyl stearate, stearyl stearate, behenyl behenate, and mixtures thereof.

10. The process according to claim 1 , wherein the amount of the at least one fatty ester that is solid at room temperature and atmospheric pressure ranges from about 0.2% to about 20% by weight, relative to the total weight of the composition (A) and/or the mixture of the composition (A) and the composition (B).

11. The process according to claim 1 , wherein the at least one surfactant is chosen from nonionic, anionic, amphoteric, and cationic surfactants.

12. The process according to claim 1 , wherein the at least one surfactant is chosen from mono- and polyoxyalkylenated and mono- and polyglycerolated nonionic surfactants.

13. The process according to claim 12 , wherein the at least one surfactant is chosen from mono- and polyoxyalkylenated nonionic surfactants oxyalkylenated with at least one oxyethylene units and oxypropylene units.

14. The process according to claim 1 , wherein the at least one basifying agent is chosen from aqueous ammonia, alkali metal carbonates and bicarbonates, sodium hydroxide, potassium hydroxide, and mixtures thereof.

15. The process according to claim 1 , wherein the at least one basifying agent is chosen from organic amines.

16. The process according to claim 1 , wherein the at least one dye is an oxidation dye comprising at least one oxidation base and optionally at least one coupler.

17. The process according to claim 1 , wherein the at least one oxidizing agent is chosen from hydrogen peroxide, urea peroxide, alkali metal bromates and ferricyanides, peroxygenated salts, peracids and precursors thereof, and mixtures thereof.

18. The process according to claim 1 , wherein the amount of fatty substances in the mixture (A)+(B) ranges from about 25% to about 80% by weight, relative to the total weight of the mixture (A)+(B).

19. A device comprising:

(i) a first compartment comprising a composition (A) in the form of a direct emulsion, comprising:

at least about 30% by weight of at least one oil;

at least one fatty alcohol that is solid at room temperature and at atmospheric pressure;

at least one fatty ester that is solid at room temperature and at atmospheric pressure chosen from esters of saturated carboxylic acids comprising at least 10 carbon atoms and esters of saturated fatty monoalcohols comprising at least 10 carbon atoms;

at least one surfactant; and

at least one basifying agent and/or at least one dye chosen from oxidation dyes, direct dyes, and mixtures thereof; and

(ii) a second compartment comprising a composition (B) comprising at least one oxidizing agent;

wherein when composition (A) and composition (B) are mixed, the resultant mixture comprises at least about 25% by weight of fatty substances, relative to the total weight of the mixture (A)+(B).

20. A non-oxidizing composition in the form of a direct emulsion comprising:

at least about 30% by weight of at least one oil;

at least one fatty alcohol that is solid at room temperature and at atmospheric pressure;

at least one fatty ester that is solid at room temperature and at atmospheric pressure chosen from esters of saturated carboxylic acids comprising at least 10 carbon atoms and esters of saturated fatty monoalcohols comprising at least 10 carbon atoms;

at least one surfactant;

at least one basifying agent and/or at least one dye chosen from oxidation dyes, direct dyes, and mixtures thereof.