After 28 days of twice-daily use, this fermented probiotic complex significantly reduced irritation-causing bacteria (Cutibacterium and Malassezia) on sensitive scalps while boosting beneficial bacteria. All 100% of participants reported their scalp sensitivity symptoms improved, though this was based on self-assessment rather than clinical measurement.

Researchers compared the scalp microbiome of 30-45-year-old Chinese women with sensitive scalps to those with healthy scalps, then tracked how a Saccharomyces and Lactobacillus ferment product changed their microbial balance over four weeks using genetic sequencing.

Funding not disclosed in abstract