Use this chart to choose an SPF based on your skin type and amount of time you plan to spend in the sun on an average day.
SPF ratings are determined in a laboratory setting. SPF-50 products are estimated to allow 1/50 of the sun’s burning rays to get through to the skin (protects against approximately 98% of the sun’s burning rays). SPF-100 products are estimated to allow 1/100 of the sun’s burning rays to get through to the skin (protects against approximately 99% of the sun’s burning rays). Actual protection may vary and will depend on the user applying adequate amounts. Reapply at least every 2 hours or as directed on the package to help ensure adequate protection.