The skin is the largest organ of the body, made up of several different components, including water, proteins, lipids, minerals, and chemicals. The layers of skin weigh an average of 6 pounds. Skin care is important to protect the skin from infection and disease-causing microorganisms. Throughout your life, your skin is constantly changing, for better or worse. In fact, your skin renews itself in a cycle of about 27 days. Proper skin care is essential to maintaining the health and vitality of this delicate organ.