Drew Barrymore Saw ‘A Huge Difference’ in Skin Tightness After Using This 47%-Off Face Serum

If Drew Barrymore‘s glowing complexion has ever made you wonder what’s in her skincare routine, one product she reaches for regularly is the Sunday Riley Good Genes All-in-One Lactic Acid Treatment Face Serum.

In an Instagram post, the actress revealed she uses Good Genes one to two nights per week as part of her evening routine and loves the results. Considering the serum has been a beauty editor’s favorite for years, her endorsement only adds to the hype. Best part? It’s currently 40% off for Amazon Prime Day.

Get the Sunday Riley Good Genes All-in-One Lactic Acid Treatment Face Serum for $51 (was $85) at Amazon! Please note, prices are accurate as of the publishing date but are subject to change.

At the heart of Good Genes is lactic acid, an AHA that gently exfoliates the skin by dissolving dead skin cells sitting on the surface. As those dull, rough cells are swept away, fresher and more radiant-looking skin is revealed underneath. Unlike some stronger exfoliating acids that can leave skin feeling irritated, lactic acid is often praised for delivering noticeable results while being gentler on the skin, making it a popular choice for those looking to improve texture and brightness.

One of the biggest benefits is the treatment’s ability to improve the appearance of uneven skin tone. Whether you’re dealing with lingering post-breakout marks, sun damage or general dullness, regular exfoliation can help skin look more even and luminous over time. With Sunday Riley Lactic Acid Treatment, you’ll notice an immediate glow after application. Long-term benefits include less discoloration and an overall clearer-looking complexion.

To use, apply one to two pumps onto clean, dry skin in the evening after cleansing. The serum can be used alone or layered underneath moisturizer. If you’re new to exfoliating acids, use it once or twice a week and gradually increase frequency as your skin adjusts. And because exfoliants can increase sun sensitivity, daily sunscreen use is essential.

One Amazon user called it “magic” from the “first use,” noting it’s “magnificent” and “worth every penny.” Another shopper said it’s “game-changing” and “definitely a holy grail,” adding that it gets rid of any “break outs” or “rough skin texture.”

If your skin has been looking dull, uneven or textured lately, Sunday Riley Good Genes All-in-One Lactic Acid Treatment Face Serum deserves a spot in your beauty cabinet while it’s 40% off.

Get the Sunday Riley Good Genes All-in-One Lactic Acid Treatment Face Serum for $51 (was $85) at Amazon! Please note, prices are accurate as of the publishing date but are subject to change.

Looking for something else? Explore more lactic acid treatments here and don’t forget to check out all of Amazon’s Daily Deals for more great finds!