Retinoids for the treatment of skin damaged by light

Claim 1

The use of compounds of the formula wherein n signifies 1 or 2; Z signifies mercapto or a residue -S(O) m R; m signifies 0, 1 or 2; R signifies lower-alkyl, lower-alkenyl, lower-alkynyl, lower-alkoxy-lower alkyl, lower-alkanoyl-lower-alkyl, hydroxy-lower-alkyl, halo-lower-alkyl, lower-carbalkoxy-lower-alkyl or, when m is 1 or 2, R also represents lower-alkoxy, hydroxy, mono-lower-alkylamino or di-lower-alkylamino, whereby "lower" denotes groups with 1-4 C atoms, and pharmaceutically acceptable salts of sulphonic acids and sulphinic acids of formula I, except ethyl p-[2-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl)propenyl]phenylsulphone, for the manufacture of preparations for the topical treatment of photodamaged skin.