This product has been a godsend for my son who has been battling cystic acne since the age of 15. After having tried or said no to nearly a dozen different treatment options, we thought we'd try this little company on an earlier suggestion from our dermatologist, and I honestly cannot believe the results I am seeing on my son's face and upper body. In 3 short months, his acne is almost completely gone, and he's excited to be starting his sophomore year in college with this burden off his shoulders.

I imagine results like this won't be for everyone, or KAVI would be a household name, but their sulfur bar worked for us, and I sincerely hope it will work for you.

Advantages: It works well, it works fast

This product is really well designed not as intense as the glycolic acid peels but has all the benefits of glowing skin and evening of skin tone!! Would buy again!

This review is for the 15% and 25% strengths. My last purchase of Salicylic Acid 15 (2oz bottle) lasted me about 15 facial peels, and I've been really eyeing the 25% strength for my shoulders, but didn't want to buy it and find it too strong. By my calculations, these new sample sizes should last about 3 to 4 peels, and so far, I'm 2 peels in and the bottle is about half finished.

If you haven't used a salicylic peel at these levels, I would definitely recommend starting with the 8 or the 15 to see how your skin reacts. The 15 does sting when I put it on, and it stays red for about an hour afterwards, but it has been working amazingly well for my acne. I'm probably going to buy another full size bottle of the 15 for my shoulders, however, as the 25 is just too strong for me.

Advantages: I don't have to make a big investment without trying the product first. Thank you for making these smaller sizes!

Coral Kavi was the bomb for my skin until I couldn't use it anymore. No matter what I did (go from twice a day to once a day to every other day), it dried my skin and gave me more breakouts. On Kavi's advice, I switched to the liquid version, and my skin is stable once again!

Advantages: Works like Coral Kavi but not as drying

Disadvantages: Lasts about as long as three bars but costs twice as much!

This has really helped lift freckling and fine lines along my upper chest. Instructions are clear and easy to follow.

I'm convinced this bar is made of magic. I've been struggling with rosacea and tried countless meds from dermatologists. This little bar made a bigger difference after one single use than dermatologists have made in a year. I usually have deep red patches on my face, and they have lightened significantly after one use of Kavi. My skin is smoother and bumps are gone too.

Advantages: It does everything it says it does.

Disadvantages: Can be a bit drying, but so worth it.

I love, love, LOVE this product! After just the first peel, my skin looks 15 years younger. No down time, very little discomfort, and near instant results. Will be buying Kavi anti aging serums next month.

I asked for the Anti-Aging System for Christmas and have been using it since then... I am African-American and have dealt with Acne since Junior High... My skin has been very receptive to this program... I also invested in a Clarisonic and ladies AND gentleman anything other than a Clarisonic is subpar... My reasoning is if I am going to "invest" in good skincare products I need to make sure my skin will receive all the benefits - thus the Clarisonic... Never before has my skin seen such improvements... I have a ways to go but I am on my way... I also use the Glycolic Cleanser 10 and all of the products will cleanse and exfoliate exceptionally well without leaving my skin dry.... The other product I would like to get is KAVI Glycolic Acid Peel and I believe this will take my skin to another level as well... When something works, cost is not a factor!!!