If a person is sensitive to the sun, do not put cancer causing sunscreen on. Put on light clothing, even long sleeves and pants. Also, be careful what time of day one goes out into the sun when sensitive. Otherwise, soak in the vitamin D. Those that say that such restrictions prevents developing a good tan, we ask, since when do Christians worry about such things? That is for body worshippers, worldly minded people, etc. God never intended us to be involved in such things. Tanning of the skin due to natural exposure is for protective purposes, not for attracting the attention of other people. "Beloved, I wish above all things that thou mayest prosper and be in health, even as thy soul prospereth" (3 John 1:2).