"Retinol is kind of my ride-or-die when it comes to skincare ingredients, and I'm of the firm belief that nothing will whip your skin into shape faster. (It's true, its ability to fade discoloration, acne spots, and fine lines goes unmatched.) Still, I know that not all retinol is created equal, so when I heard about the formula everyone from Chrissy Teigen to January Jones swears by, I have to give it a go. It's called Retinol Reform ($95) by esthetician-to-the-stars Shani Darden, and let me tell you: it is good. After just three weeks, my skin looked glowier and more refreshed, and that pesky dark spot on my left cheek is all but obsolete. (I had been using another retinol before, so I didn't experience any dryness, but if this is your first time, start by using it every other day.) I may never reach model status, but this product has got me pretty damn close." — KC