Pale winter skin plus intense tropical sun is the fastest way to ruin a vacation. Here's how to build a real tan over a week away — without the day-two burn.

Snow reflects up to 80% of UV and altitude intensifies it. Here's why a ski day delivers more sun than a beach day — and how to protect your face on the mountain.

The eyelids are the thinnest skin on the body and the single most commonly missed spot when people apply sunscreen. Here is why the eye area is skipped, whether SPF is safe to use there, how to apply it without stinging, and what sunglasses do that sunscreen cannot.

Shade blocks the sun you can see, not the UV bouncing off everything around you. Here is how much ultraviolet actually reaches you under an umbrella or a tree, why sand, water and snow make it worse, and when shade alone is genuinely enough.

Resurfacing treatments leave skin unusually vulnerable to UV, and sun exposure too early is the fastest way to undo the result. Here is how long the risk window lasts for peels, lasers and microneedling, when it is safe to start applying SPF again, and what kind of formula to use.