Finally a product that will treat my acne but not dry out my skin and not cost the earth!! This serum definitely does what it says it should, after one use my breakouts are smaller and dried out without drying out the rest of my skin. I have combination, sensitive and acne prone skin. I have been struggling with hormal breakouts off and on for the past 6 years and have tried so many skin care treatments and medications. I bought this product after reading and researching The Ordinary and their products and benefits of using these for treating acne. I decided to give it a go, and I have no regrets. My skin is glowing more and I’m starting to see a big reduction in new acne. I use this product both morning and evening (and to spot treat) along with Granactive retinoid (every second night), vitamin c suspension (every couple of nights) and plant derived squalane or rosehip oil - for hydration. Will definitely be repurchasing!