Skin whitening after burns can gradually return to normal, if not use topical medication recovery time will be longer, 5-10 years are possible. Scalding is mainly a scar-like change formed after the destruction of subcutaneous pigment cells and epidermis due to high temperature. If you want to quickly return to normal, you can apply 0.1% tacrolimus ointment or 1% pimecrolimus ointment locally, which is an immunomodulator and can promote rapid proliferation and recovery of local skin pigment cells to achieve normal skin tone. You can also try to choose to use 308nm excimer laser locally, irradiate once every other day, with local skin erythema and blister as the effective standard, continuous treatment for 3-4 months can make local skin restore the original color.