I bought this serum because I thought that there was a harsh winter coming up, but that was not the case... I used this serum anyway, before this I used the centella version and I loved that one. So during the winter months I used this Pure Hyaluronic Acid 90 Serum, I think it's okay I guess. It did help me with the dryness of my skin. But my skin didn't look perfect anymore, just like the time I used the centella serum... I had a few breakouts here and there, and the pump wasn't working that well. Every time I pumped out some of the product it would go in places where the serum belong, the serum would come out a bit around the pump. Normally this place is secure and the serum would only come out where it should be... Also if I massage the serum a bit to long into my skin, it would get sticky... I'm not really a fan of this serum, so I'm not going to repurchase this again.