Photoaging is the term and a quick search yields a few studies. Ex: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8802961/ https://www.ncbi.nlm.nih.gov/pmc/artic

Photoaging is the term and a quick search yields a few studies. Ex: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8802961/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8802961/. And anecdotally, I never used sun screen and was exposed to a lot of sunburns in the Mediterranean climate. My skin is visibly older and more wrinkled than my peers who used skin protections. My back is full of freckles and dermatologist said this is due to sunburn. I guess sunburn doesn’t need a lot of studies to show it’s very damaging to the skin?