September 2023 in “International Journal of Cosmetic Science” The researchers observed that two non-antimicrobial shampoos caused a significant increase in fungal germs but did not affect the overall scalp microbiota diversity over two weeks, suggesting these formulations may preserve or stimulate the scalp microbiota without adverse effects.
September 2023 in “Clinical, cosmetic and investigational dermatology” In this study, the researchers found that a 28-day topical treatment with a postbiotic ferment complex notably altered the scalp microbiome in women with sensitive scalps, increasing certain bacterial species and decreasing others, while also reportedly alleviating symptoms of sensitive skin syndrome in all participants.
April 2024 in “Animal models and experimental medicine” The researchers reported that platelet-rich plasma treatment increased hair growth in androgenic alopecia patients, potentially by altering scalp microbiota composition, including increased Cutibacterium and decreased Staphylococcus and Lawsonella.