The “Facial in a Bottle” Products Experts Say Actually Work

A favorite among dermatologists, estheticians, A-listers, and beauty editors, Biologique Recherche’s Lotion P50 is iconic for good reason. “This multi-acid product exfoliates while improving skin function, for immediate glow and long-term improvements,” says Dr. Cheung. The milky toner combines AHAs, BHAs, and vinegar with gluconolactone, a gentler exfoliant, and niacinamide. Together, these ingredients help remove dead skin cells, support cell turnover, regulate sebum production, and balance the skin’s pH. As the most active of the five formulas in the P50 line, it’s best suited for those with thicker or keratinized skin who can handle a stronger exfoliant. Those with thinner or more sensitive skin may prefer P50W, formulated for sensitive, oily skin, or the newer P50T.

In her review of Lotion P50 PIGM 400, formulated to target acne scars and dark marks, contributing fashion and luxury editor Moriah Polk wrote: “About a month into using P50 consistently, I walked into work, and a fellow editor stopped me mid-sentence to say my skin was glowing. And no, I wasn’t wearing makeup. What this product does best is deliver that elusive, youthful luminosity that doesn’t always photograph well but looks incredible IRL. My skin just looks fresher, brighter, and more awake—no small feat in winter, when it’s usually flaky, dull, and generally uncooperative. P50 PIGM 400 is the only thing I’ve changed in my routine, and since starting it, I haven’t had a single breakout.”

Key ingredients: gluconolactone, tartaric acid, citric acid, lactic acid, malic acid, salicylic acid, acetic acid, niacinamide