National Sunscreen Day arrives on May 27, right as summer plans ramp up, and its message is one of the best-value pieces of health advice going: wear sunscreen. Ultraviolet radiation from the sun is the leading cause of skin cancer and the biggest driver of premature skin aging, the wrinkles, spots, and leathery texture people spend fortunes trying to reverse. A daily habit of sun protection prevents far more than it costs.
Pick the right product and use enough
Look for broad-spectrum protection, which covers both UVA and UVB rays, at SPF 30 or higher. The type matters less than using it correctly, because most people apply far too little and miss spots. For your face and neck, roughly a nickel-sized amount is a reasonable target, and you want to cover easily forgotten places like the ears, the back of the neck, and the tops of your hands and feet. Mineral formulas with zinc oxide or titanium dioxide are a good choice for sensitive skin and work the moment they go on.
Reapply, because it wears off
Sunscreen is not a one-and-done shield. It breaks down in sunlight and rubs, sweats, and washes off, so reapplication every two hours of sun exposure, and right after swimming or toweling off, is what keeps the protection real. A stick formula makes midday touch-ups easy and travels well in a bag or pocket. Do not forget your lips, which burn easily and are a common spot for sun damage, and an SPF lip balm handles them.
Sunscreen is one layer, not the whole wall
The smartest sun strategy stacks several defenses. Seeking shade during the strongest midday hours, wearing a wide-brimmed hat, and choosing UPF-rated clothing all reduce how much UV reaches your skin in the first place, so sunscreen has less to do. Sunglasses protect your eyes and the delicate skin around them. And a quick myth to retire: you still get meaningful UV exposure on cloudy days and through car windows, which is why dermatologists recommend daily protection, not just beach-day protection.
There is a reason skin doctors are near-unanimous about this one. Sun protection is cheap, easy, and one of the few interventions that simultaneously lowers cancer risk and keeps skin looking younger. National Sunscreen Day is the reminder to make it automatic, part of your morning like brushing your teeth. Check your bottle’s expiration date while you are at it, because old sunscreen loses its punch.
How to celebrate
- 1Use SPF 30 or higher
Choose a broad-spectrum sunscreen that covers UVA and UVB rays. Apply enough, because most people use far too little.
- 2Reapply every two hours
Sunscreen wears off in sun, sweat, and water. Reapply through the day and right after swimming or toweling off.
- 3Cover the spots you miss
Ears, the back of the neck, and the tops of hands and feet burn often. Don't forget your lips, protected with an SPF balm.
- 4Add hat and shade
Seek shade midday and wear a wide-brimmed hat and UPF clothing. Sunscreen is one layer, not the whole defense.
- 5Check the date
Old sunscreen loses its punch, so glance at the expiration. Protection also matters on cloudy days and through car windows.