Sunscreen
Product
Daily protection against photoaging, UV-induced collagen and elastin breakdown, and cumulative sun damage
"If I could recommend just one anti-aging product, it wouldn't be an expensive cream, it would be a good broad-spectrum sunscreen that you'll actually use every day. Think of sunscreen as protecting the collagen and the elastin that your body has worked so h..."
More source quotes
"The absolute minimum thing I should use on my skin every day, it would be sunscreen."