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.
Stretch marks can appear anywhere on the body where the skin has been stretched (often as a result of weight gain). They're most likely to appear in places where fat is stored: the abdomen, breasts, upper arms, thighs and buttocks. They pose absolutely no health risk and don't compromise your body's ability to function healthily they are purely a cosmetic issue and need to be treated accordingly.
According to the American Society for Dermatologic Surgery, a surgeon will use different types of lasers depending on the color of the stretch marks one type reduces the color of dark stretch marks and another stimulates the production of pigment-making cells in already faded stretch marks. An even newer type of laser therapy can also be used to stimulate the production of collagen and help restore the skin's elasticity in depressed stretch marks.