Xanthelasma is the deposit of cholesterol in the white blood cells of the skin.
Xanthelasma are the cutaneous manifestations of lipidosis, a condition in which lipids (molecules that naturally occur in the body, lipids include sterols fat-soluble vitamins A, D, E, and K, fats, waxes, monoglycerides, diglycerides, triglycerides and phospholipids) cluster in skin cells and become visible on the surface.