Best Supplements for Improved Skin Barrier Function
Ranked by research evidence. Compare 4 supplements across 14 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.
Top picks by evidence
- Low evidence6 studies
Across 5 studies, all reported beneficial effects on skin barrier function, with predominantly small effect sizes (one moderate). The only statistically significant finding came from a 2025 meta-analysis (trans-epidermal water loss pSMD = -0.50, p = 6.39 × 10⁻⁴). Most studies were narrative reviews; no consistent dose or duration data were reported, and populations ranged from healthy adults to psoriasis patients.
- Low evidence3 studies
Across 3 studies, all reported beneficial effects of Lactobacillus sakei proBio65 on skin barrier function, with predominantly small effect sizes. The evidence includes two randomized controlled trials (RCTs) in middle-aged women and children with atopic dermatitis, and one review. One statistically significant finding was noted for increased skin sebum content. Doses, forms, and study durations were not consistently reported, limiting precise characterization.
- Very low evidence4 studies
Across 4 studies, all reported beneficial effects on skin barrier function, with effect sizes ranging from small to moderate. The one study reporting statistical significance found moderate improvements in skin moisturization and reduced transepidermal water loss after 4 weeks of daily consumption. Most studies were reviews, and no consistent dose, form, or population data were available.
- LowLactobacillus brevis SBC8803Across 5 studies, all reported beneficial effects on skin barrier function, with predominantly small effect sizes (one moderate). The only statistically significant finding came from a 2025 meta-analysis (trans-epidermal water loss pSMD = -0.50, p = 6.39 × 10⁻⁴). Most studies were narrative reviews; no consistent dose or duration data were reported, and populations ranged from healthy adults to psoriasis patients.6 beneficial6 studies
- Very lowLactobacillus rhamnosusAcross 4 studies, all reported beneficial effects on skin barrier function, with effect sizes ranging from small to moderate. The one study reporting statistical significance found moderate improvements in skin moisturization and reduced transepidermal water loss after 4 weeks of daily consumption. Most studies were reviews, and no consistent dose, form, or population data were available.4 beneficial4 studies
- LowLactobacillus sakei proBio65Across 3 studies, all reported beneficial effects of Lactobacillus sakei proBio65 on skin barrier function, with predominantly small effect sizes. The evidence includes two randomized controlled trials (RCTs) in middle-aged women and children with atopic dermatitis, and one review. One statistically significant finding was noted for increased skin sebum content. Doses, forms, and study durations were not consistently reported, limiting precise characterization.3 beneficial3 studies