Welcome and thanks for posting your query to HCM.
After reading your query it appears that you are suffering from high sun sensitivity. The best measure to protect yourself from damaging effect of sun is by protection. Now it is not possible to cover our face. But for the protection you can wear broad hats continuously, wear large framed glasses and use a good SPF sunscreen eery 3 hourly. Rather than using high potency steroid
you can use either calamine
lotion or mild potency steroid such as fluticasone
Eat a lot of green leafy vegetables and fruits in daily schedule which acts as natural sunscreens.
Hope it helps you.
With good health wishes.
Dr. Sanjay Kumar Kanodia