How does tanning make you age faster?

Answer 1

When you Tann or sitting in the sun or under a lamp to go brown your are actually burning yourself - (if you tan for too long your skin will blister and you may have to go to hospital for burn treatment).

Thus tanning is harmful and destructive to the skin cells and the skin becomes denatured and goes wrinkly faster, you may also develop brown spots and in extreme cases skin cancers.