If your face tans easily in the sun and you cannot use any creams and lotions since your skin is very sensitive. Opt for this home remedy to lighten your skin:

Mix one tsp milk powder, one tsp honey, 1/4 tsp hydrogen peroxide and enough milk to make a paste. Apply it on your face and neck. Leave it on for 20 minutes, and rinse.

Use a glossy face pack once a week.