I originally got this product because stylekorean had a promo where the price was $1 so, I decided to buy it. Prior to this I had never used this serum. Though I really love this serum, since it quickly gets rid of acne. My skin was the clearest when I had this product. I really recommend it to other people that are looking for a product that addresses their acne problems. Just keep in mind that the product has a fragrance.