L'oreal

Claudine Moire

Gerard Lang

Serge Forestier

Alain LaGrange

Andre Deflandre

Serge Forestter

Andre DeFlandre

The invention relates to benzylidenecamphor derivatives of formula: ##STR1## where R is hydrogen or a tert-butyl residue, R.sub.1 is a C.sub.1 -C.sub.8 alkyl or alkoxy residue, and R.sub.2 and R.sub.3 denote hydrogen or hydroxyl, at least one of the two being hydroxyl, to a process for preparing them and to their uses as antioxidants, broad-band sunscreens and medicinal products for the preventive treatment of skin allergies and inflammations as well as for the prevention of certain cancers.

Tert-butyl derivatives of benzylidenecamphor, process for preparing

New tert-butyl derivatives of benzylidenecamphor, process for preparing them, their use as antioxidant agents and cosmetic and pharmaceutical compositions containing them. The invention relates to benzylidenecamphor derivatives of formula: ##STR1## where R is hydrogen or a tert-butyl residue, R.sub.1 is a C.sub.1 -C.sub.8 alkyl or alkoxy residue, and R.sub.2 and R.sub.3 denote hydrogen or hydroxyl, at least one of the two being hydroxyl, to a process for preparing them and to their uses as antioxidants, broad-band sunscreens and medicinal products for the preventive treatment of skin allergies and inflammations as well as for the prevention of certain cancers.

Cosmetic composition containing hydroxylated chalcone derivatives and its use for protecting the skin and the hair against luminous radiations, new hydroxylated chalcone derivatives employed and process for their preparation. The invention relates to a cosmetic composition for protecting the skin and the hair against UV rays comprising, in a cosmetically acceptable substrate, at least one derivative of 2-hydroxychalcone of formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 denote, independently of each other, a hydrogen atom, a straight- or branched-chain C.sub.1 -C.sub.12 alkyl group, a straight- or branched-chain C.sub.1 -C.sub.12 alkyl group or a straight- or branched-chain C.sub.2 -C.sub.20 acyloxy group. The invention also relates to new derivatives of 2-hydroxychalcone and the process for their preparation.

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Romainville, France

Claudine Moire