I've used this in the past and honestly for me it is affective for lightning dark spots and blemishes. I used to have a bad habit of picking my skin which would cause so many spots but I used this for 3 months until I've seen good results, I would only recommend for u to use it at night since it gets very oily and a big no-no against the sun. Plus it's just as affective at night or not!
I haven't noticed anything bad abt it for me but if you have a big problem against fragrance then look out for that, it's only very little fragrance that u can smell but I'm not sure how much that can affect anyone. What works for me might not for you so.