A retinol-based lotion was linked to lower levels of Stenotrophomonas maltophilia bacteria Science Photo Library/Alamy
The ingredient retinol, which is widely added to anti-ageing skincare products, may improve skin health through its effect on the skin microbiome.
When applied topically, retinol gets converted into a nutrient called retinoic acid. Lab studies suggest that and degradation of the protein collagen, which may reduce the physical signs of ageing.
Applying different types of
