The skin is colonized by a diverse array of microorganisms
including bacteria and fungi. The skin microbiome is defined as the collection
of all microbes that colonize the skin. Environments at various topographical
areas of skin can affect the microbial colonization.
The major bacterial-fungal populations colonizing human
scalps have been characterized. Furthermore, the dysbiosis
of bacterial-fungal populations has been implicated in scalp dandruff,
which presents as significant problems to large numbers of people.
Dandruff scalps are associated with a higher abundance of
Malassezia restricta and Staphylococcal species. The severity of dandruff can
range from mild scale formation similar to dry skin to seborrheic dermatitis.
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