Thanks for the query.
From what you have said it appears that you are referring to sun tanning or photosensitivity. Consider usage of a broad spectrum Sunscreen to filter the harmful UV rays. Reluctance of usage of sunscreens is because they are greasy or make your face appear white which is undesirable. There are different types of sunscreens available and there is one for everyone, so find the one that will help you or take the help of a Dermatologist. Apply your sunscreen atleast 20 mins before stepping outside. Remember to mention if you have any hair loss, joint pains or oral ulcers to the dermatologist as it may indicate something serious.