Skin cancer is the most common cancer in the United States. In the United Kingdom, research has revealed that skin cancer rates have more than doubled since the 1990's. So, it's puzzling how despite the looming danger of skin cancer and the protection sunscreen offers against it, people choose not to wear it! Some people only wear it during the summer, believing that during the cooler months they're safe. But in reality, sunscreen should be worn every single day. Temperature and UV levels are not related. ..