Hi, I got a dark spot in my nose, i touched it by my nails, after that one chemist told to apply mederma, n then from my frnds sugggestion i applied melas cream my skin burn, then i applied retino 0.025 a then finally i met dermatologists he shouted n gave me galderma n ask me to come after 2 weeks but i m scared it will get cure or not n how many week it will take to cure, but doctor where should i get ur ans its not coming