Lecithins are a mixture of lipids which contain minimum of 50% polar lipids. These polar lipids (phospholipids) are the active ingredients of lecithin and impart to it the properties which make it suitable for use. Phospholipids are lipids containing phosphorus, a polar head and nonpolar tails. They are essential lipids of biological membranes. Based on their amphiphilic character, phospholipids are used as emulsifiers, wetting agents, solubilizers & liposomes due to their property of self assembly. Phospholipids play functional roles in various health segments.