in which the radicals R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8, R 9 and R 10, which may identical or different, are each (i) a hydrogen atom (ii) a linear or branched C 1-C 4 alkyl radical (iii) a radical OR 11 in which R 11 is a hydrogen atom, a linear or branched C 1-C 4 alkyl radical, a radical PO(OX 1)(OX 2) or a radical SO 2(OX 3) in which X 1, X 2 and X 3, which may be identical or different, are each a hydrogen atom or an alkali metal cation or NH 4 +, with the proviso that X 1 and X 2 may together be a divalent metal cation (iv) an acyl radical R 12CO in which R 12 is a C 1-C 30 hydrocarbon radical, which may be linear or branched, saturated or unsaturated, hydroxylated or nonhydroxylated, carboxylated or noncarboxylated (v) a glycosyl or uronyl radical with the proviso that, when a radical R 1 to R 10 is a radical OR 11, it can also form with the a aromatic ring to which it is bonded and an adjacent radical a ring member containing 5 or 6 atoms with the proviso that the radicals OR 3 and OR 8 may together form with the aromatic ring to which they are bonded and the radicals R 2 or R 4 and R 7 or R 9 a ring member containing 5 or 6 atoms and with the further proviso that at least one of the radicals R 1 to R 10 is a radical OR 11.ģ.
The cosmetic/dermatological composition as defined by claim 1, said at least one tetrahydrocurcumin compound or derivative thereof comprising a 1,7-diphenyl-3,5-heptanedione having the following structural formula (I). A topically applicable cosmetic/dermatological composition including a cosmetically/dermatologically acceptable at least one fatty phase carrier, also comprising at least one tetrahydrocurcumin compound or derivative thereof and, as a stabilizing agent therefor, a solubilizing amount of at least one oil which contains at least one amide structural unit.Ģ.