Stretch Marks Treatment is alike to that for other scars where the objective is to get the skin to pull itself back together and improve. Stretch marks are set-in streaks that appear on your stomach, breasts, hips, butt, and thighs. It is a type of scar in the skin that structures when the skin has diminished and loosened up. Treatments that assist with stimulate collagen and improve stretch marks include microneedling, fractional laser treatment, and micro laser peel.