Five Sunburns Double Melanoma Risk as 88 Million U.S. Adults Burn Each Year

Q: Sunscreen fails for most sunburns. Are we all applying it wrong?

Yes. In most cases, sunscreen is not “failing” so much as being used too little, too late, or too inconsistently. That matters because sunburn is not trivial. UV radiation damages DNA, and repeated burns sharply raise the risk of skin cancers, including melanoma and squamous cell carcinoma. Federal and cancer society data show melanoma kills more than 9,000 Americans a year, and severe or repeated burns in youth can greatly increase later cancer risk. The biggest mistake is under-application. Dermatologists say most people use only a fraction of the amount needed to reach the SPF on the label. For an adult, that means about a shot-glass amount for the body and roughly half a teaspoon for the face and neck. If you apply much less, an SPF 50 product may protect more like a far lower SPF. People also miss key areas such as the ears, neck, scalp part, jawline, tops of the feet, and back of the hands. Sunscreen should be broad-spectrum SPF 30 or higher, applied 15 to 30 minutes before sun exposure, and reapplied at least every two hours outdoors, and after swimming, sweating, or towel-drying. Spray and stick sunscreens often underperform because people do not apply enough. The 2024 survey finding that more than half of adults’ most recent sunburn happened despite sunscreen use points to this education gap. Experts stress that sunscreen works best as one layer of protection, not the only one: add shade, hats, UV-protective clothing, and sunglasses.

3 articles · Updated · The Independent · Jun 30

Five or more sunburns of any severity can double melanoma risk, experts said, underscoring how even brief UV overexposure can leave lasting damage.
Ultraviolet rays injure skin-cell DNA, and repeated or more severe burns add to that lifetime damage; melanoma kills more than 9,000 Americans a year, federal data shows.
Five blistering burns between ages 15 and 20 raise melanoma risk by 80%, while severe childhood burns are also linked to later squamous cell carcinoma.
A 2024 survey found more than 88 million U.S. adults get sunburned annually, including nearly 19 million who reported four or more burns.
Experts said prevention remains the main defense: cover exposed skin and apply sunscreen generously about 30 minutes before going outside, then reapply roughly every two hours.