Hi I am 20 years old. In last 7-8 months skin of my face and neck has turned much darker all of a sudden. My face skin was 2 shade lighter than body but now it's 3shades darker than my body. Even when I shave it becomes much more darker for the next 3-4 days. Now I have stopped shaving. Even if I rub my face with towel in gym it turns red then dark for sometime. If I apply any cream or moisturizer it again becomes darker until I wash it. I went to a dermatologist he gave a sunscreen and salicylic acid face wash but after month usage my face went more darker and pimples came out. I also used for berberis aquifolium for 3 months .i am using sunscreen for last 2 years and I apply it 30 min before going out ,but the doctor gave me new suncros sunscreen with spf 50 and kojic acid cream but after all these there was no change. I also wear hat and mask whenever I go out in sun.