Skin cancer is one of the leading cause of death in the US. Excessive and prolonged sun exposure is the leading causes of skin cancer. There it is recommended that you limit your exposure to sunlight. Use sunscreen daily. Dr. Straughn will recommend preferred sunscreen brands and SPF levels. In general the American Academy of Dermatology recommends broad spectrum (protects against both UVA and UVB) sunscreen of 30+ SPF.
You should also cover exposed skin as much as possible. Dr. Straughn recommends Solumbra 100+ SPF sun protecting clothing.