What Are Stretch Marks?
Stretch marks are visible streaks or lines that form on the skin when it stretches rapidly, causing the underlying tissues to tear. These marks are common during periods of rapid growth, such as pregnancy, puberty, or significant weight gain or loss. Stretch marks can vary in color, from red or purple to white, and are most often seen on the abdomen, thighs, hips, and breasts. Over time, the marks may fade but often remain as permanent lines on the skin’s surface. While they are harmless, many people seek treatments to reduce their appearance for cosmetic reasons.