Lipophilic quaternary ammonium salicylates, their use in cosmetics and in dermopharmacy

Topical composition intended for the treatment of dermatoses or skin disorders containing in a pharmaceutically or cosmetically acceptable medium at least one lipophilic quaternary ammonium salicylate of formula (I):

• ##STR25## in which (i) R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be identical or different, denote a C.sub.1 to C.sub.22 alkyl or alkylcycloalkyl radical or a C.sub.1 to C.sub.22 alkyl or alkylcycloalkyl radical interrupted by one or more ether, thioether, sulphoxide, ester, amide, sulphonamide, carbamate or ureido groups or which bears, at the end of the chain or in the chain, one or more hydroxyl or halogen group;
• (ii) R.sub.3 or R.sub.4 denote a group:
• R.sub.8 --OC.sub.2 H.sub.3 R.sub.7).sub.n (OCH.sub.2 CHOH--CH.sub.2 --.sub.p
• in which
• .ltoreq. n.ltoreq.4 and p denotes 0 or 1;
• R.sub.8 denotes H or a C.sub.1 to C.sub.18 alkyl, alkenyl, alkylcycloalkyl or alkylaryl radical, it being possible for the alkyl groups to be linear or branched and for the aliphatic or aromatic rings to bear one or more C.sub.1 to C.sub.4 alkyl or alkoxy substituent;
• R.sub.7 denotes H, CH.sub.3 or CH.sub.2 OH;
• when R.sub.7 denotes CH.sub.2 OH, R.sub.8 is then other than H and p equals 1;
• in the other cases, p=0;
• the group (OC.sub.2 H.sub.3 R.sub.7) can denote either or both of the following formulas:
• ##STR26## R.sub.1 and R.sub.2 have the meanings recited in paragraph (i);
• or (iii) R.sub.4 denotes the group:
• ##STR27## in which n denotes 0 or 1;
• R.sub.1, R.sub.2 and R.sub.3 having the same meanings as in paragraph (i);
• R.sub.6 denotes a hydrogen, a hydroxyl, a halogen, an alkyl or hydroxyalkyl residue or a C.sub.1 to C.sub.18 acyl residue;
• and
• R.sub.5 denotes a group corresponding to the formula:
• ##STR28## in which n is an integer varying between 0 and 10.