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. 2021 May 21;8:662640. doi: 10.3389/fmed.2021.662640

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Copyright © 2021 Zhong, Li, Zhang, Shen, Lu and Li.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The combined therapy improved the acne condition in patients with mild to severe acne. (A,D) Representative photographs of mild acne patients before and after 2 months of the combined treatment. (B,E) Representative photographs of moderate acne patients before and after 2 months of the combined treatment. (C,F) Representative photographs of severe acne patients before and after 2 months of the combined treatment.