ENQUIRER: Here's the latest advice on protecting your skin from sun Wednesday May 29, 2013 To download a pdf of this article, please click here. Enquirer By: Toni Schklar Why use sunscreen? 90 percent of non-melanoma skin cancers are associated with exposure to ultraviolet (UV) radiation from the sun. 90 percent of visible changes commonly attributed to aging are caused by the sun. There are two types of radiation UVA rays: Penetrates 40 times deeper than UVB and is constant most of the day. UVB rays: Short rays absorbed by the epidermis (top layer of skin); it causes sunburns and is most intense between 10 a.m. and 3 p.m. How to use sunscreen There are different levels of sunburn protection provided by sunscreens. At minimum, you should use SPF 30. Apply sunscreen (product recommended amount) to uncovered skin 30 minutes before going outside. A minimum of 1 ounce is needed to cover the average body (all skin areas that are not clothed). Reapply every two hours after swimming or sweating. It is important to use a broad-spectrum sunscreen that filters both UVB and UVA radiation; it should contain zinc oxide. Makeup that has sunscreen in it is not adequate for this purpose. Introducing Toni Schklar Welcome to our new regular feature on our Healthy Living site: The Healthy Life by Toni Schklar, manager and practitioner of the St. Elizabeth Healthcare Holistic Health Center in Edgewood, Ky. We’ve used Toni in the past as an expert local source. We’re happy to share her ideas and insights more often, and tap into her more than 35 years of experience in nutrition, health and wellness, counseling and nursing.