Scientists have discovered that Staphylococcus epidermidis, a common skin bacterium, may help protect our skin from harmful UV rays.

These microbes can break down a compound called cis-urocanic acid, which forms in the skin after UVB exposure and weakens the immune response.

By metabolizing this compound using an enzyme called urocanase, the bacteria help reduce UV-related immune suppression and potential skin damage.

This breakthrough suggests that our skin microbiome may act as a natural defense system against UV radiation.

Future skincare products could enhance this protection by supporting these bacteria or applying their enzymes directly. However, more research is needed before such treatments become available for humans.