Chinese Journal of Dermatology ›› 2026, e20240514.doi: 10.35541/cjd.20240514

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Oral probiotics in the treatment of skin diseases: mechanisms of action and advances in their application

Dai Yingying, Wang Lian, Jiang Xian   

  1. Department of Dermatology and Venereology, Laboratory of Dermatology, Clinical Institute of Inflammation and Immunology, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
  • Received:2024-09-26 Revised:2026-06-23 Online:2026-02-09 Published:2026-09-22
  • Contact: Jiang Xian E-mail:jiangxian@scu.edu.cn
  • Supported by:
    Clinical Research Innovation Project, West China Hospital, Sichuan University (2019HXCX010); Sichuan Natural Science Foundation (2023NSFSC1554); National Natural Science Foundation of China (82273559)

Abstract: 【Abstract】 The gut microbiota is closely associated with skin health, and probiotic supplementation contributes to regulating the gut microbiota and maintaining gut homeostasis. Studies have shown that probiotics, such as Lactobacillus and Bifidobacterium, exert beneficial effects in the treatment of skin diseases through various mechanisms, including modulation of immune responses mediated by metabolites such as short-chain fatty acids, regulation of neuroendocrine functions, and enhancement of barrier structures. This review summarizes the mechanisms by which oral probiotics improve skin health and discusses the advances in their application in the treatment of specific skin diseases, including atopic dermatitis, psoriasis, and acne vulgaris.

Key words: Skin diseases, Gastrointestinal microbiome, Probiotics, Short-chain fatty acids, Gut-skin axis, Dermatitis, atopic, Psoriasis, Acne vulgaris