Stretch marks happen when your body grows faster than your skin can keep up with. This causes the elastic fibers just under the surface of the skin to break, resulting in stretch marks. If stretch marks are formed on the skin’s surface, they’d be much easier to treat.
Depending on your natural skin coloring, stretch marks begin as raised pink, reddish brown or dark brown striations that then turn a brighter violet or purple. Gradually these bright marks flatten and fade to a color a few shades lighter than your natural skin tone. They usually become less noticeable over time.