Skin gives protection and support to the deep body tissues and has the ability to stretch to some extent due to the presence of protein fibers in the dermis. But too fast enlargement of the body parts can cause excessive stretching of the skin, resulting in the breaking down of collagen and elastin fibers. This damage causes slightly depressed discolorations called stria atrophia or stretch marks. Initially these marks are slightly pinkish and later become white or silvery in appearance.
Stretch marks are found in conditions like pregnancy, puberty and obesity and are usually found in places like the abdomen, thighs, breasts, buttocks, shoulders etc.
Because of the increasing need for stretch mark treatments there have been a number of products that have been brought to market to deal with a stretch mark cure. However most of the products are not proven scientifically and few give desired results . The most effective form of stretch mark treatment is plastic or laser surgery. These methods have been proved to be effective, more so than anything that you can do topically.