Scientists have found the mechanism whereby ultraviolet rays, emitted from sunlight, damages our skin.
What type of ultraviolet radiation would be the worst of our skin? And how does the sunlight harm it?
Ultraviolet radiation that the human eye can not comprehend is broken up into four classes based on wavelength and photon energy. Past studies have recorded how every kind of UV radiation penetrates to various depths into the epidermis, and prolonged exposure may cause skin cancer, but precisely how it hurts human skin in different manners has received much less attention.
Researchers in the makeup sector have debated for decades if UVA is worse compared to UVB for inducing photodamage, which contributes to the premature onset of wrinkles and raised tissue fragility.
The Binghamton study utilized samples of female breast skin, selected since it’s typically exposed only to low levels of the sun which were exposed to several wavelengths of UV radiation. What Lipsky and German discovered is that no UV variety is much more detrimental than another, instead of the harm scales with the total amount of UV energy that your skin absorbs.
A more valuable discovery, however, is that the mechanism for how UV damages skin. The research demonstrates that UV divides the bonds between cells from the stratum corneum, the upper layer of the skin by changing proteins in corneodesmosomes, which help the cells to stick together. That is why sunburn contributes to skin peeling.
Construction on the findings of the study, Lipsky, and German do additional research regarding how UV radiation affects deeper layers of skin.
As these experiments persist, Lipsky said the main takeaway, for the time being, is that skin defense is essential regardless of what period of the year it’s.
“We are trying to drive the material to use sunscreen not only for preventing skin cancer but also to maintain the integrity of your skin so that you don’t get diseases or other issues,” Lipsky said.