Jan 13, 2023 - 02:12 PM
Hello! We do not label or determine the ingredients of products on our website. However, I found an explanation that I’m hoping may answer your question. If not, we recommend contacting the manufacturer, ClearChoice, in this instance.
“To determine a sunscreen's SPF, testers round up 20 sun-sensitive people and measure the amount of UV rays it takes them to burn without sunscreen. Then they redo the test with sunscreen. The "with sunscreen" number is divided by the "without sunscreen" number, and the result is rounded down to the nearest five.’