Anthony Youn, MD on Instagram: "Check out this Phenol Peel before and after! 😱 . The phenol peel is the deepest chemical peel performed today. You must peel about 25% of the skin at a time in order to give your liver and kidneys a chance to detoxify and remove it from your system. Otherwise you can get potentially fatal arrhythmias from it. It’s used for deep acne scarring, wrinkles and sun damage. No, I don’t perform it. The results are impressive, but are they worth the risks and recovery? .