Stretch marks are visible lines on the skin, which usually appear in the abdominal wall, over the thighs, upper arms, buttocks, and breasts. This cosmetic issue can cover large areas of the body. The culprit for stretch marks is usually pregnancy, but also there can be other reasons, such as sudden gain or loss in weight, rapid growth, heredity, and stress. Fortunately, there are several natural ways to reduce the appearance of unsightly stretch marks.