Sun Exposure and Skin Aging: What Dermatologists Don’t Always Tell You
Disclaimer: This post shares general skin health and sun safety information based on public health research. It is not medical advice. If you have a history of skin cancer or unusual moles, speak with a dermatologist. Sunscreen is non-negotiable if you want to age slowly. But if you think sun damage is just about sunburns and wrinkles, you’re missing half the story. Sun exposure is the #1 external cause of skin aging. It’s called photoaging, and it accounts for up to 80% of visible aging on the face, neck, and hands. The part dermatologists don’t always explain is this: not all sun exposure is equal, and how you repair at night matters just as much as what you put on in the morning. Here’s what actually happens, and how to protect your skin without living like a vampire. What Sun Does to Your Skin at the Cellular Level UV light comes in two types that matter for aging: UVA : Penetrates deep into the dermis. It’s present year-round, through clouds and windows. It breaks down col...