1. Up the SPF
As someone with fair skin, I’ve given up on tanning as it can cause cellular damage that accelerates the signs of aging. While I try to wear sunscreen every day of the year, it’s true that the UVB rays that cause sun burns are stronger during the warmer months. The SPF 15 found in most makeup is not enough to sustain a full layer of sun protection, especially if you don’t reapply throughout the day. During the summer, I use an SPF of at least 30, but aim for SPF 50 or higher. I look for sunscreens that offer broad-spectrum protection from UVA and UVB rays, have a light/non-greasy finish and are ideally reef-safe*.
*Stream2Sea has a comprehensive list of common sunscreen ingredients to avoid that prevent a sunscreen from being biodegradable in fragile marine environments.