epidermidibacterium keratini epidermidibacterium keratini epidermidibacterium keratini is a gram-positive, chemoheterotrophic, non-motile, non-sporeforming, rod-shaped, aerobic bacterium that it was first isolated from human epidermal keratinocytes in 2018. it is part of the normal human flora, typically the skin flora. epidermidibacterium keratini scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: sporichthyales family: sporichthyaceae genus: epidermidibacteriumlee et al. 2018 species: e. keratini binomial name epidermidibacterium keratinilee et al. 2018 type strain epi-7jcm 31644kccm 90264 bacteriology human skin provides a habitat for various microorganisms that stably maintain communities through commensal relationships. and skin aging is associated with changes in cutaneous physiology including interactions with a skin microbial community. this strain was first isolated from young woman. additionally, the younger skin appeared to have high proportion of e. keratini , while the older skin had no e. keratini but rather other types of bacteria that this species has been found to be related to skin aging.