Composition for washing and antidandruff treatment of hair and the scalp, based on selenium sulphide and nonionic surfactant of the polyglycerolated or alkylpolyglycoside type

Cosmetic composition for washing and antidandruff treatment of hair and the scalp containing in an aqueous medium at least:

• a) from 0.1 to 5% by weight of selenium sulphide in suspension;
• b) from 5 to 50% by weight of a polyglycerolated or alkylpolyglycoside nonionic surfactant selected from the group consisting of:
• (A) compounds prepared by condensation, using acid catalysis, of 2 to 10 moles of glycidol per mole of alcohol or alpha diol containing 10 to 14 carbon atoms, at a temperature of 50.degree. to 120.degree. C.;
• and
• (B) compound corresponding to the following formula:
• RO(C.sub.6 H.sub.10 O.sub.5).sub.x --H (VII)
• which has the expanded structure (VIII):
• ##STR6## in which R denotes a C.sub.8 -C.sub.24 straight- or branched-chain alkyl or alkenyl radical or a mixture of C.sub.8 -C.sub.24 straight- or branched-chain alkyl or alkenyl radicals and x is a number from 1 to 15;
• and
• c) from 0.2 to 5% by weight of a suspending agent consisting essentially of xanthan gum or scleroglucan gum;
• the percentages by weight being determined relative to the total weight of the composition.