POLYSACCHARIDE DERIVATIVES OF LIPOIC ACID, THEIR PREPARATION, USE AS SKIN COSMETICS AND MEDICAL DEVICES

摘要

Disclosed are polysaccharides containing residues of glucosamine or galactosamine in the repetitive unit, characterised by the presence of esters on the hydroxyls or amides on the amine functions, with lipoic acid or with mixtures of lipoic acid and formic acid.