Collagen is the principal structural protein present in the skin, tendon an
d bone of the vertebrate body. Ten different vertebrate collagens have been
identified, of which the dominant collagen is type I. Interest in collagen
as a biomaterial is due to its low immunogenicity and high biocompatibilit
y. Collagen has diverse general and biomedical applications and is also a c
ommon constituent of many cosmetic and food products in the form of gelatin
. This paper discusses the use of collagen in the fields of medicine and bi
otechnology, as well as in the cosmetic and pharmaceutical industry.