I normally am obsessed with Mario Bandescu skin care products... And this one is good, but I'm not blown away. I bought it at Ulta for around 20$ (very small container). I use it at night so it doesn't really bother me that it leaves my skin sticky. I definitely see results from it, but I don't think it's the holy grail of anti acne serums. I don't look in the mirror the next morning amazed by how great my skin looks. I use a charcoal detox overnight cream that works just as well if not better . They don't have it on here but it's called "SMACKbeauty charcoal detox the night away". THAT is my favorite overnight cream/serum. Is this a good anti-acne serum, yes... I absolutely see results over time. But if I have to choose between that and my charcoal detox night cream. I'd choose the later.