Been using this serum for 3 months now. I had dry skin and this serum helped me get it back to being hydrated! Looking on the website today, it is out of stock! You could tell this is a popular serum. I bought a set of Innisfree face products and it made my skin glow (especially in the morning). So happy! My acne are not as bad as before (now I'm only getting small bumps-- and it does not bother me anymore!!)P.S. this product works well with the balancing lotion!