SPF indicates the amount of UVB rays blocked by a sunscreen. SPF 30 will block 97.4% of UVB rays, while SPF 50 will block 98%. </p><p>As you can see, the difference is relatively small. Although the numbers increase, your degree of protection isn’t significantly better. <strong>In fact, the difference between SPF 30 and 50 is minimal</strong>—SPF 50 only blocks an extra 0.6% of UVB radiation.<br/></p><p><br/></p><p>Percentage of blocked UVB rays: </p><ol><li><strong>SPF 15: 93%</strong></li><li><strong>SPF 30: 97,4%</strong></li><li><strong>SPF 50: 98% </strong></li><li><strong>SPF 60: 98,3%</strong></li></ol><p>For more information, read our article <a style="color:#000000;text-decoration:underline" href="https://ca.attitudeliving.com/blogs/lifestyle/the-truth-about-high-spf-sunscreens-are-they-really-better?_pos=1&_sid=792d8627c&_ss=r" target="_blank" data-overwrite-link-behavior="true">"The Truth About High SPF Sunscreens: Are They Really Better?"</a></p>