REN

Every single product from this brand is a winner — seriously, you can't go wrong with their highly effective formulas. I can't recommend them highly enough, especially considering how reasonably priced they are for how well they work and how much product you get. The concept they're motivated by is Clean Bio Active Skincare: products formulated with plant-based ingredients and without harsh soaps, petrochemicals, synthetic dyes, and parabens. The line is also socially conscious; they donate 2.5 percent of their profit to campaigns that promote a better environment. They have products to address every skin issue for every skin type, even the most sensitive.

(from L-R: ClearCalm3 Replenishing Night Serum, $30; F10 Smooth and Renew Peel Mask, $37; Active 7 Radiant Eye Gel, $45, all in stores and online at Sephora)