I bought this ampoule only because my Mizon snail serum was finished and i needed a serum in my skincare routine. When i first opened the bottle and sensed the strong smell, i was sure i was not going to like it, because i have very sensitive skin, acne prone and i thought it was going to cause me some rash or break me out. Little did i expect to see results after the first application ! i've been using it for about 3 days, but honestly it reduced my acne scarring so much over night !I will check whether there is a lotion/cream from the same Saem whitening routing, because i cannot even image what results would have combined with other products from the same line.