i love this product so much. i have been suffering with acne for a few years now, and this is the only product which has been able to provide me with fast and effective skin improvement. it is very moisturising, which is my favourite thing about it. the morning after the first usage, my skin felt extremely smooth and not dry! i used it simultaneously with ost vitamin c20 serum (bha in the evenings, vitamin c in the mornings), and cosrx ultimate moisturising honey overnight mask for around two weeks now. the condition of the acne prone skin has improved miraculously. purging was expected, so after the first week the effectiveness of the product really begun to show. my skin isn't totally acne free as i have been only been using it for two weeks, but i do believe that with continuous usage my skin will eventually be acne free! this is seriously the most effective product i've used for my acne and i would highly highly highly recommend it to anyone suffering from acne.