| abstract |
A cosmetic composition comprising a hydroxy material selected from: a) layered double hydroxides of formula (I): [M(1-a)Na(OH)2]y+ Xx-y/x. zH2O where M is selected from divalent metal ions and lithium; N is a trivalent metal ion; X is an anion of charge x-; y+ is the net charge on the mixed metal hydroxide cation; and when M is a divalent metal ion a is a number from 0.17 to 0.5 and y = a; when M is lithium a is a number from 0.67 to 0.75 and y = (2a-1): and z is a number from 0 to 10; and b) a hydroxy salt of formula (II): [M' (OH)(2-a')]?a'+ (Xx-¿)¿(a'/x)?. zH2O where M' is at least one divalent metal ion; a' is a number in the range 0.05 to 1; X is an anion of charge x-; and z is a number from 0 to 10; and c) mixtures thereof and wherein at least some of X comprises the anionic form of a non-sunscreen skin benefit agent. The skin benefit agent is preferably selected from anti-ageing agents, moisturising agents, antimicrobial agents, anti-acne agents, anti-inflammatory agents, anti-seborrhoeic agents, vasodilators and inhibitors of melanogenesis. |