What is also frustratng is how blacks are encouraged to use suncscreen and they are most likely to suffer from vitamin D deficiency. Dr. Oz said, on Oprah, that blacks have a SPF factor of 500. Then why are we using sunscreen? Not long agao, I began every summer with a trip to the drug store to get the family's suncscreen supply for the summer. Now, I tell everyone not to worry about using it. I even tell my husband not to use it and he is white.