According to a 2020 study, a group of patients reported noticeable changes after 3 sessions for their mild to severe atrophic acne scars. However, the exact number of sessions needed varies.
If you have severe acne, frequent breakouts, or if your acne doesn't respond to over-the-counter ... American Academy of Dermatology Association. Acne scars: Diagnosis and treatment. National Library ...
HS leaves scars that are different from others, such as acne scars. More research is needed ... or areas of hyperpigmentation rather than more severe or older scars. While topical HS scar ...