I have this dry dark spot on my face!! since the beginning from last year on winter time. So whenever i go outside and it was cold! i get this big huge scar on my face, because when i used smile it cracked shaped and got dark becuase my skin was very dry. now i have tried everything?? and anytime i put something on it...like mederma, cocobutter, scazone??? it makes it more dark bec ause i have senstive skin. but idk why anytime i put something it get more darker :( and i am so tiered. idk what medicated i should use???? please help?