Aromatic benzamido compounds; their preparation and their use in human or veterinary medicine or in cosmetic preparations

A cosmetic composition for body and hair hygiene comprising in a cosmetically acceptable vehicle at least one aromatic benzamido compound having the formula ##STR9## wherein R.sub.1 represents --CH.sub.2 OH, --CHOHCH.sub.3 or --COR.sub.5,

• R.sub.5 represents hydrogen, lower alkyl, OR.sub.6 or ##STR10## R.sub.6 represents hydrogen, lower alkyl or mono- or polyhydroxyalkyl, r' and r" represent hydrogen, lower alkyl, mono- or polyhydroxy alkyl, aryl or benzyl optionally substituted, the residue of an amino acid or aminated sugar or when taken together form a heterocycle,
• R.sub.2 represents an .alpha.,.alpha.'-disubstituted alkyl radical having 4-12 carbon atoms or mono or polycyclic cycloalkyl having 5-12 carbon atoms wherein the linking carbon is quaternary,
• R.sub.3 represents hydrogen or alkyl having 1-10 carbon atoms, and
• R.sub.4 represents hydrogen, lower alkyl or hydroxy, and
• the salts of said aromatic benzamido compound of Formula I when R.sub.6 represents hydrogen.

A composition comprising in an appropriate vehicle, an aromatic benzamido compound having the formula ##STR11## wherein R.sub.1 represents --CH.sub.2 OH, --CHOHCH.sub.3 or --COR.sub.5,

• R.sub.5 represents hydrogen, lower alkyl, OR.sub.6 or ##STR12## R.sub.6 represents hydrogen, lower alkyl or mono- or polyhydroxyalkyl, r' and 4" represent hydrogen, lower alkyl, mono- or polyhydroxy alkyl, aryl or benzyl optionally substituted, the residue of an amino acid or aminated sugar or when taken together form a heterocycle,
• R.sub.2 represents an .alpha.,.alpha.'-disubstituted alkyl radical having 4-12 carbon atoms or mono or polycyclic cycloalkyl having 5-12 carbon atoms wherein the linking carbon is quaternary,
• R.sub.3 represents hydrogen or alkyl having 1-10 carbon atoms, and
• R.sub.4 represents hydrogen, lower alkyl or hydroxy, and
• the salts of said aromatic benzamido compound of Formula I when R.sub.6 represents hydrogen.