Mederma PM Intensive Overnight Scar Cream is the first and only overnight scar cream specifically formulated to work while you sleep. During sleep, our bodies work harder to reverse the skin damage caused during the day, repairing and regenerating skin cells at a faster rate. Mederma PM Intensive Overnight Scar Cream is formulated to compliment this night activity with tripeptol, a skin-nourishing complex with peptides, collagen, and antioxidants to promote healthy-looking skin and help your skin fight free-radical damage. Daily nightly application of this cream is clinically shown to make scars smaller and less visible and can begin to bring noticeable results in as little as 14 nights.