Henna burn - what can be done to treat the discoloration? (Photo)

Hi, I applied henna month ago in winter.. Initially, I got a burning sensation on my skin and it increased. After weeks, when the henna got removed finally, my skin was pink and now almost a month has passed and it is still light pink or pinkish white sometimes... Please tell me what to do to heal my skin and the discoloration of the skin. It feels like the skin is fine now as it doesn't itch or burn etc but the colour is change... I would like to know which ointment or medicine should Iuse