Cholesterol is the principal sterol of the higher animals, found in all body tissues. It is the main constituent of gallstones and all biological membranes. Approximately 25% of total brain lipid is cholesterol. Cholesterol is suitable for use in liposome preparations.

Dithranol (1, 8 - dihydroxy-9-anthrone) is also called as anthralin. It is a vital topical antipsoriatic drugs. Dithranol, an athracene derivative, is a free radical generating mitochondrial poison that induces apoptosis in keratinocytes. Dithranol may be used as a matrix for matrix assisted…