This is shown by researchers from the University of Copenhagen in a new study, published in the scientific journal mBio.
"We found that the microbiome in epidermis is unique. It is very different depending on age and gender. On the other hand, the microbiome in dermis is the same—regardless of age and gender. This has not been shown before," says co-author Lene Bay, Postdoc at the Department of Immunology and Microbiology, University of Copenhagen.
Importance for Skin Disorders
The results have an impact on our understanding of the skin and its bacteria. According to the researchers, this knowledge is important if we are to become better at treating skin disorders such as childhood eczema and psoriasis and understand why they occur.
"It is important that we drop the assumption that we are all different, and that the microbiome of the skin does not matter very much. We do know that bacteria play a major role in skin disorders. Therefore, we need to understand the bacteria and the skin in its three dimensions," says co-author Thomas Bjarnsholt, Professor at the Department of Immunology and Microbiology, University of Copenhagen.