Dandruff as one example.
Comparison of Healthy and Dandruff Scalp Microbiome Reveals the Role of Commensals in Scalp Health
Enrichment of Biotin and Vitamin Metabolism Pathways in the Bacterial Microbiome of the Healthy Scalp
Interestingly, Propionibacterium spp., which was the most abundant bacterial species in the healthy scalp microbiome, also carries the genes for biotin biosynthesis and its transport, suggesting its key role in providing the host with biotin