Redness of white spots after sun exposure can be left untreated if the symptoms are mild, and can be treated with topical application of medication if the symptoms are severe. Most of the white spots are lack of melanocytes, the more common is vitiligo, this disease in the sun after sunburn will appear sunburn, redness, some will be accompanied by itching. If the symptoms are mild or absent, you can use a cold towel to apply wet compresses, or you can use running water to rinse, which can provide relief. If the symptoms are more obvious, you can apply glucocorticoid ointment, such as mometasone furoate cream, dexamethasone cream, etc. For the parts of the body or children who can not apply glucocorticoid ointment, you can use tacrolimus ointment or pimecrolimus cream to apply. White spot redness after sun exposure, if the symptoms are serious to timely medical treatment, according to the specific circumstances of the treatment, if you need to use drugs should be strictly comply with the doctor’s instructions, not unauthorized use of drugs.