Successful Topical Application of Botulinum Toxin After Microneedling Versus Microneedling Alone for the Treatment of Atrophic Post Acne Scars: A Prospective, Split-face, Controlled Study.

Background: Acne scars are a source of cosmetic concern for most of the patients.

Objective: We sought to compare the clinical efficacy and safety of topical botulinum toxin A (BTX-A) application immediately after microneedling (Mn) versus Mn with saline in the treatment of atrophic acne scars.

Methods: Forty patients with atrophic acne scars (rolling, boxcar, and mixed types) were enrolled in a split-face study; microneedling was performed on both sides of the face followed by an application of topically diluted botulinum toxin on one side (Side A) and saline on the other (Side B) for two sessions both two weeks apart.

Clinical and Histopathological evaluation of different tools for the Subcision of Atrophic Acne Scars.

Background: Acne scarring can lead to social and psychological distress.

Objective: To compare the safety, efficacy, and long-term improvement of subcision using tri-beveled hypodermic (Th) needle versus cannula for the treatment of atrophic post-acne scars.

Methods: Forty-six patients with atrophic post-acne scars were treated with subcision using (Th) needle on one side of the face and a blunt cannula on the other side of the face for 6 sessions one month apart.