A little goes a long way. I have noticed a difference and has helped reduce my scaring.
It's good under my foundation if I previously tap it on my acne well (when I can't see the white color of it anymore) but it doesn't really help with my acne. It does reduce the redness of it bc of its white color but it doesn't make my acne smaller. Also I can only use it on my acne bc if I use it on my entire forehead (for example) then I will break out there T-T
Great for hyperpigmentation...