One of these sought-after products is its retinol serum, which is now on sale for only $13 on Amazon. The anti-aging find tackles wrinkles, pores, and sunspots, resulting in a smoother ...

Retinol has become somewhat of a beauty buzzword in recent years, with people of all ages reaching for the lauded skincare serum. But what exactly is retinol? How does it work? And who is it best for?