If you will be out in the sun for long periods of time. My advice would be to purchase some sunblock. Sunblock comes in a variety of strengths that coincides with skin types. The American Academy of Dermintoligy recommends year around protection with a high sun protection factor (SPF) for everyone, but particularly fair skinned people and those who burn easily. The Food and Drug Administration has evaluated SPF rating and recognizes values between 2 to 15. It has not been determined ratings over 15 offer additional protection. When picking out a sunscreen get one that claims to protect against UVB and UVA rays. Get the SPF that matches your skin type. When applying sunscreen, it is best to 30 minutes before you go out and then reapply every 60 to 90 minutes. We like the water-resistant type to prevent it coming off when we sweat. When picking out Sunglasses, Ophthalogists recommend that they have a UV protection of at least 90 percent. Normal suntan lotions allow the suns rays to get through to your skin, but it is better than nothing. Suntan lotion keeps the skin moist and keeping it from drying. It is the same purpose as when you baste a turkey in the oven. Keeping it moist allows it to brown and not burn so easy. When in the sun take care of your skin, even on cloudy day. The clouds allow the suns rays to penetrate through to you and can cause a severe burn. At the waterfront or in a boat, you can burn twice as easy. This is due to the sunrays beating down directly on you and reflecting off the water. The suns UV rays are most harmful during the hours of 10:00am and 2:00pm. Severe cases of sunburn should be treated by a doctor. Mild cases can be treated with an Aloe Vera or other type of moisturizing lotions or better yet, an antibiotic ointment. These will help to soothe the burn somewhat. The person should stay out of the sun. Don't have sunscreen? Well then, keeps covered by long sleeves, long pants and of course wear a hat.