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Welcome Surfline Members

Here are a few of our favorite products for your next big surf adventure or lunch break session. Trust The Bum®.

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  • Man with tattoos applying signature sunscreen against a tropical background
Grab More Surf Trip Essentials

Forecast: Sonny.

Shop Merch Shop Sun Care
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According to the Skin Cancer Foundation, 1 in 5 Americans will get skin cancer in their lifetime. We wanna change that.
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How often should I reapply?

Avoid making a rookie mistake! Reapply every 2 hours and after swimming, sweating and toweling off.

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Do I need sunscreen when it’s cloudy?

Yup, 90% of UV rays still find their way through clouds, which means you can still get fried.

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When should I avoid sun?

We know it’s tough, but try to limit sun exposure when the sun’s rays are most intense (10am to 4pm).

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Do I need SPF in the water?

Yep. Reflections off water can increase sun exposure by up to 50%.

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Does my baby need protection too?

Keep newborns out of direct sunlight and always cover them with shade. Check with
your pediatrician, before applying sunscreen to children under 6 months
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UVA vs. UVB Rays

From the sun, come both UVA and UVB rays. UVA rays are known for penetrating the deeper layers of our skin, which can lead to premature skin aging and wrinkles. UVB rays on the other hand, are known as the culprits of sunburns and play a significant role in causing skin cancer. Curious how intense the UV rays are at any point in the day? Just look up the UV index on your phone.

Check Today's UV Index
Illustration of a sun with arrows and the phrase “The Five S’s of Sun Safety” for sun education tips – Sun Education - Sun Bum

Keep Hanging Out With Us

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She’s only 14, but none of this is new to her. Not collecting medals. Not making grown-ass pro athletes jealous. Not the “did you see that?!” surprised faces in the crowd at global competitions like the 2019 USASA national championships in Colorado and last year’s Stab High Japan.

Read More: In The Air

Navigating tropical surf trips in 2025 isn’t the easiest of affairs. It turns out that surfers really are everywhere. The search for tropical isolation is eternal.

Read More: Club Tropicana

The 13th installment of the Bum Rush Tour landed in Australia’s “Steel City” (Newcastle) — a blue-collar paradise located 160 kilometers north of Sydney’s central business district. On a windblown day in April, Australia’s premier aerialists plopped themselves on the beach, watched a local session intently, and handed a $5k check to the surfer they liked the best. 

Read More: Bum Rush Tour Newcastle, Australia 2025

We've Got Answers

Is Sport Sunscreen Better Than Regular Sunscreen?

Depends on what you’re up to. If your idea of a workout is scrolling on your phone, regular sunscreen will do just fine. But if you’re out there actually moving—running, swimming, paddling—sport sunscreen is where it’s at. It’s made to stick around longer, even when you’re dripping sweat or diving into waves. Most sport sunscreens hold up for 40 to 80 minutes of serious activity before you need to reapply. So if you play hard, sport sunscreen is the way to go.

Can You Use Sports Sunscreen Every Day?

For sure. Just because it’s made for action doesn’t mean you can’t wear it for your everyday routine. Sport sunscreen works just like regular sunscreen—except it won’t ghost you the second you start sweating. If you like a sunscreen that goes the extra mile, this is it. Just check the texture—some sport formulas are a little thicker than daily sunscreens, so find one that feels good on your skin and make it part of your morning ritual.

Does Water Resistant Sunscreen Wash Off?

Eventually, yeah. Water-resistant doesn’t mean waterproof (because no sunscreen is), but sport formulas hold up way better when you’re splashing around. After about 40 to 80 minutes of swimming, sweating, or doing whatever makes you feel alive, it starts to break down. That’s your cue to reapply. And at the end of the day? Rinse it off. Leaving sunscreen on overnight can trap dirt and oil, and nobody wants that. Quick shower, fresh skin, and you’re good to go.