Tresc: First 3 weeks using this ampoule were... Not so great. I've got some closed comedomes and I was pretty sure that they were caused by this product. However I kept on using this AIO and I'm so glad I did. It turned out that the cc's were caused by something else, and my skin just loves this ampoule. My skin is sensitive, I struggle with acne and hyper pigmentation, this stuff helps with everything. It calms down any breakouts, helps with reducing inflammation of the skin, and also brightens up my hyper pigmentation. I really recommend it.