Fractional laser resurfacing: This treatment uses a laser that delivers a series of tiny, high-precision microbeams into the skin. These microbeams create controlled areas of injury, known as microscopic treatment zones, while leaving the surrounding skin unaffected. The laser energy stimulates the production of new collagen and elastin, which helps to remodel and improve the appearance of stretch marks. The procedure typically takes 15 to 30 minutes, depending on the size and number of stretch marks being treated.