Risks include scarring, infection, and irregular heartbeats. According to Youn, the common risks of a phenol peel are what you'd expect: Scarring, pigment issues, infection, and cold sore activation.

Hydrogel injection may change the way the heart muscle heals after a heart attack. ScienceDaily. Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2021 / 03 / 210301133815.htm.