Aside from avoiding the sun’s harmful UV rays, it can be incredibly confusing to figure out not only which products (like serums, moisturizers, and eye cream) we should use to prevent the signs of aging but also when to start incorporating them into our routines.

A number of dermatologists say it’s never too early to start an anti-aging regimen, but most agree that starting in your late 20s to mid-30s is a good time.