Foamable washing composition based on selected insoluble silicones and an alkylpolyglycoside, and cosmetic and dermatological uses thereof

Foamable washing composition for hair or skin treatment, consisting essentially of, in an aqueous medium:

• a) from 0.2 to 30% by weight relative to the total weight of the composition of a silicone which is insoluble in said medium and unreactive with said medium selected from the group consisting of:
• (i) silicone gums consisting of polydiorgano-siloxanes having high molecular weight between 200,000 and 1,000,000;
• (ii) organopolysiloxane resins which are cross-linked siloxane systems, containing R'.sub.2 SiO.sub.2/2, R'SiO.sub.3/2 and SiO.sub.4/2 units in which R' represents a hydrocarbon group having 1 to 6 carbon atoms or a phenyl group;
• (iii) polyalkylsiloxanes, polyarylsiloxanes or polyalkylarylsiloxanes containing, in their structure, one or a number of functional groups selected from the GROUP consisting of thiol, carboxylate, hydroxyalkylsulfonate, hydroxyalkylthiosulfate and hydroxyacylamino connected to the siloxane chain and connected via a hydrocarbon radical;
• (iv) organomodified silicones containing .gamma.-hydroxypropyl groups corresponding to the formula:
• ##STR8## in which:
• the radicals R.sub.1, which are identical or different, are selected from the group consisting of methyl and phenyl radicals, at least 60 mol % of the radicals R.sub.1 denoting methyl:
• p is between 1 and 30 inclusive;
• and
• q is between 1 and 150 inclusive;
• (v) organomodified silicones containing acyloxy alkyl groups corresponding to the formula:
• ##STR9## in which R.sub.2 denotes a methyl, phenyl, --OCOR" or hydroxyl group, only one of the radicals R.sub.2 per silicon atom may be OH;
• R'.sub.2 denotes methyl or phenyl, at least 60 mol % of the radicals R.sub.2 and R'.sub.2 combined denoting methyl;
• R" denotes a C.sub.8 -C.sub.20 alkyl or alkenyl;
• R.sub.3 denotes a linear or branched, divalent C.sub.2 -C.sub.18 alkylene hydrocarbon radical;
• r is between 1 and 120 inclusive;
• p is between 1 and 30;
• q is equal to 0 or less than 0.5 p, p+q being between 1 and 30;
• it being possible for the polyorganosiloxanes of formula (IV) to contain CH.sub.3 Si--OH
• O.sub.2/2
• in proportions not exceeding 15% of the sum p+q+r;
• and
• (vi) mixtures of the organomodified silicones as defined in paragraphs (iii) to (v);
• and
• b) from 4 to 60% by weight relative to the total weight of the composition of at least one compound corresponding to the expanded structure:
• ##STR10## in which:
• R denotes a straight- or branched-chain, C.sub.8 -C.sub.24 alkyl or alkenyl radical or a mixture of straight- or branched-chain, C.sub.8 -C.sub.24 alkyl or alkenyl radicals;
• x is a number from i to 15;
• the compound of formula (II)/silicone ratio by weight being greater than or equal to 1.