I had chosen this vitamin c serum as a selection in my last Alltrue box (not a current customer of this subscription box). I am so happy that I chose this serum. My face absolutely loves vitamin c serums, and this one did not disappoint. This is a lightweight oil that absorbs quickly, and does not leave a greasy feel. In the extreme heat/humidity of the summer, I did see my skin become oilier toward midday (but I can neither confirm/deny if this serum was the cause- I can only say it didn't help).The benefits of this serum though: major skin brightening! I always have a healthy glow after I use this serum.