Abstract: Composition for slowing down hair loss and inducing and stimulating its growth, comprising a compound of the following formula: ##STR1## wherein R.sub.1 and R.sub.3 denote H; R.sub.2 and R.sub.4 denote H or an alkyl; R.sub.5 denotes H, an alkyl, an alkenyl, a cycloalkyl, an aryl, an arylalkyl, a hydroxyalkyl or an aminoalkyl; X denotes H, halogen, alkyl, nitro, benzoyloxy or --NHR.sub.6 where R.sub.6 denotes H, acyl or alkyl; Z denotes sulfur or oxygen, with the proviso that Z denotes sulfur when X denotes H or R.sub.5 denotes aryl; Y denotes oxygen or OSO.sub.3 ; as well as its physiologically acceptable salts.