I cannot offer high enough praise for Paula's Choice BHA products! I use the 1% BHA during the day, the 2% BHA at night, and the Skin Lightener (which has the highest concentration of BHA) both day and night. Within four days, I saw a radical improvement in the texture and condition of my skin after years and years of unsuccessfully battling with adult acne (like many women, I never had acne until I hit my '30s, and was appalled to be experiencing wrinkles and zits at this stage in my life!). My skin has FINALLY cleared up and never feels dry or appears scaly. I also strongly recommend the use of Paula's Choice cleanser for oily/combination skin with a Wonder Cloth (another recently discovered miracle product!). I have recommended this product line to numerous people and no: I do not work for the company or have any affiliation with it. I will never consider using any other product line and am wildly happy with the results!