Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Lactobacillus acidophilus is a probiotic bacterium commonly found in the human gut and in fermented products like yogurt. Its use for acne is supported by preliminary scientific evidence, though research is still emerging and not yet definitive. The rationale for using L. acidophilus in acne management centers on the gut-skin axis: the concept that gut health can influence skin conditions, including acne. Studies have found that individuals with acne may have altered gut microbiota, and restoring balance through probiotics such as L. acidophilus could theoretically reduce systemic inflammation and modulate immune function, both of which are factors in acne pathogenesis.

Several small clinical trials and animal studies suggest that oral supplementation or topical application of probiotics, including L. acidophilus, may reduce acne lesion counts and improve skin barrier function. Some research also indicates that L. acidophilus can inhibit the growth of Propionibacterium acnes (now called Cutibacterium acnes), the bacteria implicated in acne development, and can reduce inflammation by modulating cytokine production.

However, current evidence is limited by small sample sizes and methodological differences, and there is no large-scale, definitive clinical trial confirming efficacy. Thus, while there is some scientific rationale and preliminary evidence supporting the use of L. acidophilus for acne, its effectiveness is not yet established beyond doubt. The evidence rating is 2, indicating early-stage but promising research that warrants further investigation.

More about Lactobacillus acidophilus
More about Acne

Other ingredients used for Acne

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