Acne, Microbiome, and Probiotics: The Gut-Skin Axis.

This review found that your gut bacteria and skin bacteria are connected—they talk to each other through your immune system. While lab studies show probiotics (especially taken orally) could help reduce acne inflammation and improve gut health, actual human trials are limited. The research suggests probiotics *might* work as a backup option or alongside other acne treatments, but we don't have enough real-world data yet to say they're a replacement for proven acne treatments.