Phospholipids are defined as phosphorous that contains fats. The most important varieties of phospholipids are lecithins and sphingomyelin. These two types of phospholipids play an important role in speeding up the process of maturation of foetal lungs before birth. Phospholipids are greasy or waxy compounds. They are mainly found in the membranes of the red blood cells. They play an effective role in making up the structural materials of a cell membrane. This helps them to facilitate the passage of fats in and out of the cells of the blood. Phospholipids are basically lipids or fat molecules in which phosphoric acid and fatty acids are attached to a backbone made of glycerol. Phospholipids are mostly found in the living cells of the body. They are also found in the bilayers of cell membranes. Phospholipids are compounds that look like cholesterol. They are naturally found in all the layers of the skin, except the staratum corneum. They are one of the factors that naturally moisturise the skin.
