SPF stands for ion Factor —sounds technical, right? But it's really simple. SPF is a measure of how well a screen can your from UVB rays, which are the pesky rays responsible for burn and, over time, cancer. The higher the SPF, the longer your is ed from these harmful rays. Think of SPF as a shield. SPF stands for Sun Protection Factor and measures how well a sunscreen blocks UVB rays and sunburn. Learn how to choose the right SPF for your skin type, how long it lasts, and how to apply it properly. 1. What Is SPF? SPF or Sun Protection Factor is a measure of how much UV radiation is required to burn your protected skin as compared to the amount required by UV rays to burn your unprotected skin. For example, if you apply an SPF 30, it will protect your skin until it is exposed to 30 times more UVB radiation than that is required to burn unprotected skin. (1) For example, if your skin takes 10 minutes to burn normally, a sunscreen with an SPF30 will protect you for 5 hours (10X30 = 300 ... ABOUT SPF RECORD CHECK The SPF Record Check is a diagnostic tool that acts as a Sender Policy Framework (SPF) record lookup and SPF validator. This test will lookup an SPF record for the queried domain name, display the SPF Record (if found), and run a series of diagnostic tests (SPF Validation) against the record, highlighting any errors found with the record that could impact email delivery.
