I have been using the MD Brightener twice a day for less than two weeks and the improvement on my complexion is outstanding. The ingredients are not only evening out my skin tone, which was my main concern, but also smoothing out texture and regulating my oils. I had been using products for my skin issues but hit a plateau and knew I needed something next level, but I wasn't sure whether the Brightener would be effective on dark skin (Fitzpatrick VI). Now I'm confident I'll be back with an even better review after a month