Optical brighteners as bleaching agents
AssigneeL'oreal
InventorsVéronique Chevalier, Mélanie Quest
Life of this patent
Estimating the term…
Abstract
Methods and compositions for bleaching the skin are provided. Compounds of the optical brightener family may be applied in an effective amount to bleach the skin. The present inventions also relates to compositions which contain of compounds of the optical brightener family and other cosmetic compounds, such as skin bleaching agents, screening agents, anti-wrinkle agents and moisturizers.
Claims32
A method of bleaching Asian or Caucasian skin, comprising applying to the skin an effective amount of at least one compound belonging to the optical brightener family,
- wherein the compound belonging to the optical brightener family is selected from the group consisting of sodium-4,4′bis[4,6-dianilino-1,3,5-triazin-2-yl)amino]stilbene-2,2′-disulphonate and 2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole).
A method of bleaching Asian or Caucasian skin, comprising applying to the skin an effective amount of at least one compound belonging to the optical brightener family in combination with at least a second skin bleaching agent represented by formula (I);
- wherein
- R is a hydrogen atom or —COR2,
- R2 is a saturated or unsaturated, linear, cyclic or branched, optionally hydroxylated, C1 to C30 alkyl or alkoxy radical,
- R1 is a radical selected from the group consisting of
- (a) —CO—NR3R4,
- (b) —CO—O—R5, and
- (c) —SO2—R5,
- R3 is a hydrogen atom or a linear or branched, saturated or unsaturated, optionally hydroxylated, C1 to C6 alkyl radical,
- R4 is a hydrogen atom or the radical R5 defined below,
- R5 is a saturated or unsaturated, linear, cyclic or branched, optionally hydroxylated, C1 to C30 alkyl radical.
A method of bleaching skin, comprising applying to the skin an effective amount of at least one compound belonging to the optical brightener family selected from the group consisting of sodium 4,4′-bis[4,6dianilino-1,3,5-triazin-2-yl)amino]stilbene-2,2′-disulphonate and 2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole), wherein the compound belonging to the optical brightener family is contained in a concealer composition.
A method of brlaching skin, comprising applying to the skin an effective amount of at least one compound belonging to optical brightener family in combination with second skin bleaching agent represented by formula (I):
- wherein
- R is a hydrogen atom or —COR2,
- R2 is a saturated or unsaturated, linear, cyclic or branched, optionally hydroxylated, C1 to C30 alkyl or alkoxy radical,
- R1 is a radical selected from the group consisting of
- (a) —CO—NR3R4,
- (b) —CO—O—R5, and
- (c) —SO2—R5,
- R3 is a hydrogen atom or a linear or branched, saturated or unsaturated, optionally hydroxylated, C1 to C6 alkyl radical,
- R4 is a hydrogen atom or the radical R5 defined below,
- R5 is a saturated or unsaturated, linear, cyclic or branched, optionally hydroxylated, C1 to C30 alkyl radical,
- wherein the compound belonging to the optical brightener family is contained in a concealer composition.
A method of bleaching skin, comprising applying to the skin an effective amount of at least one compound belonging to the optical brightener family, wherein the optical brightener is selected from the group consisting of sodium 4,4′-bis[(4,6-dianilino-1,3,5-triazin-2-yl)amino]stilbene-2,2′-disulphonate and 2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole).
The method of claim, 20, wherein the compound belonging to the optical brightener family is contained in a concealer composition.
Dependencies are inferred from the claim text.