Use twice a week, acne prone, never breaks me out, in fact- it helps my break...

Use twice a week, acne prone, never breaks me out, in fact- it helps my break outs. Feel it working right away. Only down side is that I haven't noticed my sunspots fading as much as when I used retinol. If you are using for dark spots, I wouldn't recommend, but it is a great vitamin c night cream- good ingredients, great for tightening up skin and keeping it hydrated and plump. Besides what I mentioned above, I do really like this product and will definitely repurchase (but will probably use my retinol underneath, which I have started doing).