After your treatment, your skin will start to naturally regenerate and repair below the surface in the dermis. It may be up to six weeks before you notice an improvement – this is because it takes time to form new collagen, generate new skin cells, and enhance your blood supply. After six weeks, however, you should begin to notice your skin looking much healthier, with areas of scarring, pigmentation, sun damage, etc. looking significantly smoother and more even in terms of your complexion.