It's summer time and that means time to break out the sunscreen. SPF stands for sun protection factor, and no matter what the number on your bottle says, it won't protect you if you don't wear it. It's protection for a sun burn yes, but it's more than that. Sunscreen protects us from exposure to ultraviolet light (UVA or UVB) which accounts for 90% of the symptoms of premature skin and aging like wrinkles, not to mention skin cancers. UVB radiation is responsible for the sunburn on the out layers of skin, UVA however can cause problems on the deeper layers. Skin cancer usually appears in adulthood, but is caused by sun exposure and sunburns that began as early as childhood. The most damaging overexposure to sun happens before the age of 18.
So everyone should wear sunscreen. It doesn't matter what your skin type is, or if you "don't burn easily." Even babies as young as 6 months of age should be protected, and younger than that they should simply stay out of direct sun.
Experts say that only about half of the recommended amount of sunscreen is applied by the average user, and even less reapply throughout the day. So just how should you use your sunscreen? Start by getting it out of the closet. Use it every day. Even on days when it is overcast we still have UVA/UVB rays to deal with. To really be effective, sun screen should be applied liberally, before sun exposure, and take about 20 - 30 minutes to be absorbed by the skin, then reapplied every two hours, especially during water sports. So be sure you are applying enough sunscreen and allow time for it to soak in before heading out in the sun.
Use at least a SPF of 15. SPF measures the time that sunscreen can protect you from burning. SPF 15 will block 93% of rays, SPF 30 about 96.7%, and as high as SPF 70 will give you just a bit more protection at 98.3%. Yes, a higher SPF will allow you to stay out in the sun longer before getting burned, but don't let those higher numbers give you a false sense of security. If it takes about 20 minutes for the skin to burn, then theoretically SPF 15 would give you about 15 times longer. The key, regardless of SPF, is reapplying the sunscreen every two hours to continue that protection.
If you do get a sunburn, applying Aloe lotion can help sooth the pain and inflammation. Avoid using petroleum jelly, benzocaine, lidocain or butter as these can make the symptoms worse. Be sure to also watch for signs of sun poisoning which include fever, chills, nausea or rash.
Be safe this summer, and follow the ABC's:
Away - Stay out of the sun when possible.
Block - Use that sunblock!
Cover Up - Cover skin with loose clothing.