What Happens When You Layer Two Products with the Same Active Ingredient

Episode #383 / Feb 27, 2012
Layering of skincare products is one of the murkier topics in all of skincare. What happens to the first one you applied? If it's two of the same product, does it become twice as strong? And so on. In this episode of DermTV, with a little demonstration, Dr. Schultz explains what happens when you layer two products with the same active ingredient.