Every doctor, myself included, will expound upon the benefits of sunscreen. We'll emphasize how sunscreen protects your skin from harmful UVA and UVB rays, lowers your chance of skin cancer and slows the aging process. We convince you not to leave the house without it. So you head to the store ready to heed our advice and then get stuck when confronted with 47 different brands of sunscreen; because really, how is the average person supposed to tell the difference?