I've been using it for more than a month now and it worked WONDERS. Truly a life changing product! At first I was a bit skeptic since it didn't seem like it was showing any results for two weeks, then I tried putting foundation on and it made me look FLAWLESS My large pores seemed less visible too!

I used to apply it twice a day. But since it has a high percentage of Niacinamide, I noticed that my skin started to break out again after a month of use. So I settled by using it once a day, which is in the mornings! Using it in the morning helped control my oil production during the day. Now I don't have to worry about my skin feeling so oily! This product also helped with my skin barrier too and now my skin feels less sensitive.

I recommend to use three drops for your face (+ 2 drops for your neck!) and use it ONCE a day! I also didn't layer it with other active ingredients since it can be too much on my skin. So use Niacinamide + sunscreen in the day and other active ingredients (AHA/BHA/PHA/Retinol) in the night! I also don't really recommend combining it with Vitamin C in the morning because it can be irritating for the skin.

This product has fragrance in it, but it's not strong (I could barely smell anything) and it's REALLY low on the ingredients list, so I believe people with sensitive skin can handle this product! :)