Pigment: A substance that gives color to tissue. Pigments are responsible for the colors of skin, eyes, and hair. QUESTION An average adult has about ________ square feet of skin. See Answer From Skin and Beauty Resources Psoriasis and Moisturizing Your SkinEssential Psoriatic Arthritis Skin Care TipsEmbracing Beauty Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19