Over-Night Biological Peel

A potent, overnight peel for smoother, more even skin.

Discontinued product

We regret to inform you that this formula has been discontinued.

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The Perfect Routine

The perfect routine description in one line.

Key Ingredients

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Future Made Better

True to our founding family’s mission, we strive to improve the quality of the communities we serve by reducing our
environmental impact, formulating responsibly, and supporting charitable causes. This formula is made with:
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Responsible Formulation
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Sustainable Sourcing
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Commitment to Recycling
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Responsible Packaging & Manufacturing
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Sustainable Retail
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Kiehl's Gives Philanthrophy
How To Apply

How To Apply

How To Apply

How To Apply

Rated 4 out of 5 by from Works great, but the top is defective! This product works just like it claims and a little goes a loooong way! I do find that I wake up with a sweaty face in the morning after putting this on my face at bedtime. Maybe it doesn't let your pores breathe? Anyway, the results are great! The packaging needs to be revamped, though. It comes with a pump top that screws on, but the top won't stay screwed tight so that the top is just resting on the bottle. I went to my local Kiehl's counter to swap the top and the consultant and I discovered that all the tops on the bottles did the same thing! It's like the threads on the bottle don't match up with the top. Kiehl's: please fix this!!
Date published: 2013-08-21
Rated 5 out of 5 by from First impression: highly impressive I have very difficult and sensitive skin and, after trying most of the available high end/ organic/ natural and chemical products, have been resigned to not having good skin- until now. This is the first product i tried and IT ACTUALLY WORKS. I also tried samples of the Acai line, and now i'm hooked. Even the Kiehl deodorant works. I'm a believer! Thank you for giving me a chance have beautiful skin. This is also the first time i am posting a review on anything. I just want to share the secret to those who are still in search for the perfect product. Give this a try, you wont be disappointed. It is worth every penny.
Date published: 2011-12-22
Rated 5 out of 5 by from Cannot live without this When I first bought this, I was soo excited to try it. After a couple of nights I was slightly disappointed. My skin was incredibly soft in the morning, but I didn't see any drastic changes in my pores. But after a few more uses, I've become a 110% fan of the over night biological peel. I don't think I can live without this product. I honestly have no idea what happened - one morning after using the product my pores had seemingly disappeared. So effective! I also use the Rare Earth Pore Cleansing Masque, Rare Earth Deep Pore Daily Cleanser, and Epidermal Re-Texturizing Micro-Dermabrasion. I used to never walk out of my house unless I had foundation+coverup on my terrible skin, but thanks to Kiehls I can now go out natural and beautiful!
Date published: 2011-06-19
Rated 5 out of 5 by from Worth every penny Let me start by saying that there's a reason Kiehl's has been around for so long, and have been so successful. Secondly, i'm a grad student & don't have a lot of expendable income, but I'm also studying chemistry so I evaluate products not only based on their effectiveness, but on their chemical content - & this stuff is 5 stars in both categories. Even though it's pricey, it lasts a long time (I apply it once a week, along with using Kiehl's indian clay face mask & their rosa arctica light moisturizer in between). It's truly worth the investment, & I highly recommend it to women of any age :]
Date published: 2013-01-11
Rated 4 out of 5 by from Facelift in a bottle? My friends and I love it A friend used to sell an expensive skincare line and taught me about the effectiveness of hylauronic acid (did I spell that right?). Her line was too expensive (even with her discount), so I sought out another alternative and found this. I use it once to twice a week (I can be a space cadet and forget to apply and regret it) and love the results. Great around the nose and any other place skin looks a bit worse for the wear. I am surprised at some of the comments about its texture. I use this after a quick toner and don't use moisturize. It always dries before I hit the pillow.
Date published: 2012-09-13
Rated 5 out of 5 by from Excellent product used according to directions I have used this off an on for over five years. It is effective and easy to use. I am now using it after cleaning my face at night with a Clarisonic Mia 2. I can't understand the few negative responses posted here. I wonder if the people who have found it sticky are using too much or putting it on too thickly. I use one small squirt for my entire face and it's dry within a minute or two. What's not to love. And one bottle lasts a long time, unlike many other products I have tried. This is a true good value.
Date published: 2013-01-27
Rated 4 out of 5 by from My doubts vanished...along with my pimples, flaky skin, & fine lines! I got this as an alternative to using Retin A while pregnant. With the first couple of uses, I was skeptical. The texture is thick & tacky & it never really absorbs into my skin. I honestly felt like more was rubbing off onto my pillowcase at night. After a solid two weeks of usage, at 3xs per week, I have to admit that any doubts I had about this product vanished, along with some pregnancy related pimples, flaky skin, and fine lines! My skin feels smoother, looks tighter, & is more luminous. So happy to have found this product! Will continue to use it after the baby is born!
Date published: 2015-02-18
Rated 5 out of 5 by from Nudges away flakiness, roughness and helps to soften blackheads This product really works as per the product's descriptions. My skin was seriously flaking during winter and could not return by using other skin cares. I tried this product for 2 nights, and immediately my skin's texture improved as well as become brighter, clears the way for moisture and makeup. I noticed that my blackheads also become softer which enable me to remove them easily. This product is very gentle even does not create any pains on my active breakout. This is the best exfoliator I have ever had. Feel free to give it a try!
Date published: 2011-03-18
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