Use a broad spectrum sunscreen both indoors as well as before going out. Sunscreen should be both uva and uvb protective. Always use your umbrella whether it is raining or not. Use a cap or a scarf or your dupatta to cover your head. Protect your eyes with a glares. Avoid scrubbing your face. Do not steam or sauna. If you swim, use a sunscreen prior to it and after. Avoid face cosmetics for the time being.