This is my first bottle, but I'll definitely repurchase it. It feels good on my combination skin and helps to control sebum. I use it once a day, so the double size bottle is great option.

This is one of my favorite serums from the Ordinary which I have been using for more than 5 years every day. It is a bit sticky but not too much. Does not clog the pores and wears well under make up. The good thing is that you can get bigger bottles now which would last for about 4 months considering that I use it once a day every day. 

I finished my first one which i bought in summer and i repurchase it due to its efficiency

It is up to the hype, the only con for me its the texture because when you first apply it you get a bit of a white residue

Omg you have to buy this item wow