Abstract: The present disclosure relates to novel N-alkylpolyhydroxylated secondary para-phenylenediamines, to processes for preparing them, to compositions for dyeing keratin fibers, for example keratin fibers such as the hair, comprising, in a medium that is suitable for dyeing, at least one such secondary para-phenylenediamine. The present disclosure also relates to processes for dyeing keratin fibers with the compositions according to the present disclosure, and to dyeing kits containing such compositions.

Abstract: The present disclosure relates to novel N-alkylhydroxylated secondary para-phenylenediamine compounds, to a composition for dyeing keratin fibers, for instance human keratin fibers such as the hair, comprising, in a medium that is suitable for dyeing, at least one ortho- and/or meta-substituted N-alkylhydroxylated secondary para-phenylenediamine, to a process for dyeing keratin fibers comprising applying this composition, and also a dyeing “kit.

Abstract: A regime or regimen for promoting and/or inducing and/or stimulating the pigmentation of keratin materials and/or for preventing and/or limiting the depigmentation and/or bleaching and/or for preventing and/or limiting the canities thereof, more particularly of human keratin fibers such as the hair, beard hair, moustache hair, the eyelashes and the eyebrows, includes administering to an individual in need of such treatment at least one 2-oxyacetamide compound of formula (I), or a salt and/or solvate thereof:

Abstract: The present disclosure relates to novel secondary para-phenylenediamines having a carboxyl group. The present disclosure further relates to a dye composition comprising at least one secondary para-phenylenediamine for dyeing keratin fibers, such as human hair, a process for preparing the composition, and a process and kit for dyeing keratin fibers using the composition.

Abstract: 3-Sulfanylpropanamide compounds of formula (I) or salts and/or solvates thereof: are useful for caring for and/or making up keratin fibers, especially human keratin fibers, to induce and/or stimulate the growth, to stop the loss and/or to increase the density thereof, and/or to improve the appearance and/or to reduce the canities thereof, and/or to stimulate the pigmentation and/or to limit the depigmentation and/or bleaching thereof.

Abstract: Agents for inducing and/or stimulating the growth of human keratin fibers and/or preventing their loss and/or increasing their density include at least one 4-aminopiperidine compound of formula (I):

Abstract: The present invention relates to the cosmetic use of at least one 4-aminopiperidine compound of formula (I) in which: Alk1 and Alk2 denote a C1-C10 alkylene radical; Ar1 denotes a phenyl group optionally substituted with one or more radicals, which may be identical or different, chosen from —F, —CF3, —R1, —OR1, —NR1R2; Ar2 denotes a phenyl group optionally substituted with one or more radicals, which may be identical or different, chosen from —F, —CF3, —NR1R2; R denotes a hydrogen atom or a C1-C10 alkyl radical; R1 and R2 denoting a C1-C7 alkyl radical; and the salts, optical isomers and solvates thereof, as an agent for combating wrinkles, especially expression wrinkles, and/or for decontracting the skin and/or relaxing the features. The invention also relates to a cosmetic composition containing such a compound and to the corresponding novel compounds.

Abstract: Oxyacetamide compounds that are inhibitors of type-1 15-hydroxyprostaglandin dehydrogenase (15-PGDH) and which have the formula (I), or salts and/or solvates thereof: are useful for inducing and/or stimulating the growth of human keratin fibers, e.g., human head hair and/or eyelashes, and/or for retarding the loss and/or increasing the density thereof and/or for caring for and/or making up such keratin fibers.

Abstract: Novel (phenylsulfonyl)acrylonitrile siloxanes/silanes, and cosmetic/dermatological sunscreen compositions comprised thereof, are well suited for UV-A photoprotecting the skin and/or the hair against the damaging effects of solar radiation.

Abstract: The present disclosure relates to novel N-alkylhydroxylated secondary para-phenylenediamine compounds, to a composition for dyeing keratin fibers, for instance human keratin fibers such as the hair, comprising, in a medium that is suitable for dyeing, at least one ortho- and/or meta-substituted N-alkylhydroxylated secondary para-phenylenediamine, to a process for dyeing keratin fibers comprising applying this composition, and also a dyeing “kit.

Abstract: The present disclosure relates to novel N-alkylpolyhydroxylated secondary para-phenylenediamines, to processes for preparing them, to compositions for dyeing keratin fibers, for example keratin fibers such as the hair, comprising, in a medium that is suitable for dyeing, at least one such secondary para-phenylenediamine. The present disclosure also relates to processes for dyeing keratin fibers with the compositions according to the present disclosure, and to dyeing kits containing such compositions.

Abstract: The present disclosure relates to novel secondary para-phenylenediamines having a carboxyl group. The present disclosure further relates to a dye composition comprising at least one secondary para-phenylenediamine for dyeing keratin fibers, such as human hair, a process for preparing the composition, and a process and kit for dyeing keratin fibers using the composition.

Abstract: 2-Thioacetamide compounds are suited for inducing and/or stimulating the growth of human keratin fibers, for example human hair, and/or reducing the loss and/or increasing the density thereof.

Abstract: Novel (phenylsulfonyl)acrylonitrile siloxanes/silanes, and cosmetic/dermatological sunscreen compositions comprised thereof, are well suited for UV-A photoprotecting the skin and/or the hair against the damaging effects of solar radiation.

Abstract: Compositions for the oxidation dyeing of keratin fibers, containing at least one oxidation base and at least one coupler chosen from indolizine derivative comprising at least one cationic group Z, Z being chosen from quaternized aliphatic chains, aliphatic chains comprising at least one quaternized saturated ring, and aliphatic chains comprising at least one quaternized unsaturated ring. Methods of using these cationic indolizine derivatives as couplers for the oxidation dyeing of keratin fibers, in combination with at least one oxidation base, and to dyeing processes using them. Some of these cationic indolizine derivatives are novel.

Abstract: Compositions for oxidation dyeing of keratin fibers comprising at least one oxidation base and at least one coupler chosen from indolizine derivatives, methods for using the same for oxidation dyeing of keratin fibers, and compounds chosen from indolizine derivatives.

Abstract: Compositions for the oxidation dyeing of keratin fibers, containing at least one oxidation base and at least one coupler chosen from indolizine derivative comprising at least one cationic group Z, Z being chosen from quaternized aliphatic chains, aliphatic chains comprising at least one quaternized saturated ring, and aliphatic chains comprising at least one quaternized unsaturated ring. Methods of using these cationic indolizine derivatives as couplers for the oxidation dyeing of keratin fibers, in combination with at least one oxidation base, and to dyeing processes using them. Some of these cationic indolizine derivatives are novel.

Abstract: Compositions for oxidation dyeing of keratin fibers comprising at least one oxidation base and at least one coupler chosen from indolizine derivatives, methods for using the same for oxidation dyeing of keratin fibers, and compounds chosen from indolizine derivatives.

Abstract: Novel compositions for the oxidation dyeing of keratin fibers, comprising at least one oxidation base and at least one specific 3-aminopyrazoline as coupler, and dyeing process and dyeing kit using this composition.

Abstract: Topically applicable sunscreen/cosmetic compositions well suited for the photoprotection of human skin and/or hair against the damaging effects of UV-irradiation, particularly solar radiation, comprise an effective UV-photoprotecting amount of at least one characteristically novel aminoamidine compound, advantageously having the structural formula (I): formulated into a topically applicable, cosmetically acceptable vehicle, diluent or carrier therefor.