Allergic contact dermatitis caused by sodium chondroitin sulfate contained in a cosmetic cream

The oligosaccharides (from the Greek oligos, ‘a few’, and sacchar, ‘sugar’) are saccharide polymers containing a small number of component sugars, also known as monosaccharides. Oligosaccharides can have many functions; for example, they are commonly found on the plasma membranes of animal cells, where they can play a role in cell–cell recognition. In general, they are found either Olinked or N-linked to compatible amino acid side-chains in proteins or to lipid moieties (glycans). They can be used in cosmetic products (1), and they have rarely been reported as sensitizers.