Just because you're picking a higher SPF does not mean you can go longer between reapplications.⁠ ⁠ A higher SPF like 70 or 100 does provide better protection during that two-hour window — especially under real-world conditions when most people don't apply enough.⁠ ⁠ However, it is not rated to last longer than two hours. And if you're sweating or swimming, you probably need to reapply even more frequently.⁠ If you aren't reapplying, you are risking sun damage.⁠ ⁠ Do not get lulled into a false sense of security that an SPF 100 is gonna protect you all day long. It won't.⁠ ⁠ Reapply every two hours. No exceptions.⁠ ⁠ #dermatologist #sunscreen #spf #sunprotection #skincare #dermatology #uvprotection