Slathering on the Sunscreen is Important in Winter, Too Slathering on the Sunscreen is Important in Winter, Too higher altitudes Skin Cancer Foundation SkinCancer.org Skin Cancer Foundation Slathering on the Sunscreen is Important in Winter, Too elevation Essential Outdoor Sun Safety Tips for Winter Essential Outdoor Sun Safety Tips for Winter Slathering on the Sunscreen is Important in Winter, Too Skin Cancer Foundation Essential Sun Safety Information for Skiers and Snowboarders strong UVA rays