Sun Shirts vs. Sunscreen: What Dermatologists Want You to Know
Most of us were taught that sunscreen is the ultimate line of defense against sun damage. And while sunscreen is essential, it isn’t always enough. It wears off, needs reapplying every two hours, and often gets missed on key spots like the backs of hands, ears, or neck. That’s where UPF clothing comes in...
A UPF 50+ sun shirt blocks 98% of harmful UVA and UVB rays, offering continuous protection without reapplication. Unlike sunscreen, which can rub off, sweat off, or degrade over time, UPF-rated fabrics provide all-day, chemical-free coverage that dermatologists recommend as a first line of defense.
Why Dermatologists Recommend UPF Clothing
Sunscreen is vital, but dermatologists emphasize that the best sun protection is layered. Clothing with a UPF rating acts as a physical barrier that never fades. In fact, the Skin Cancer Foundation gives its Seal of Recommendation to UPF-rated clothing because it consistently protects against UV damage — something sunscreen can’t always guarantee.
Key reasons dermatologists favor UPF clothing:
Reliability: Doesn’t wash off, fade, or require reapplication
Coverage: Protects hard-to-reach areas you might forget with sunscreen
Compliance: People are more likely to wear a shirt than reapply lotion every two hours
Skin health: Reduces risk of premature aging, sunburns, and long-term damage
UPF vs. SPF: What’s the Difference?
Many people confuse UPF and SPF — but they measure protection differently.
|
Measure |
What it Means | Coverage |
|
SPF (Sun Protection Factor) |
Time sunscreen protects against UVB rays before burning |
Only UVB rays (burning) |
|
UPF (Ultraviolet Protection Factor) |
Percentage of UVA + UVB blocked by fabric |
Both UVA + UVB rays (burning + aging) |
👉 UPF 50+ fabric blocks 98% of UVA and UVB rays. Sunscreen labeled SPF 50 protects only against UVB — and only if reapplied consistently.
When to Choose Sun Shirts Over Sunscreen
You don’t need to choose one or the other — dermatologists recommend both. But there are many situations where a sun shirt is the more effective (and practical) choice.
Outdoor sports: Tennis, pickleball, golf, hiking, boating.
Beach days: Perfect for swimming, paddleboarding, or reading on the sand without constant sunscreen reapplication.
Daily wear: Commuting, dog walks, or sitting at a café outdoors.
Sensitive skin: A chemical-free solution for people who react to sunscreen.
What to Look for in a Dermatologist-Approved Sun Shirt
Not all sun shirts are created equal. Dermatologists recommend lab-tested fabrics with a UPF rating of 50+ — the gold standard in sun protection.
Checklist for choosing a sun shirt:
UPF 50+ certified fabric (blocks 98% UVA/UVB)
Lightweight + breathable (you’ll actually want to wear it in the heat)
Moisture-wicking (keeps you cool during activity)
Sleek, flattering fit (not oversized or boxy)
Long sleeves + thumbholes (for maximum coverage)
Conclusion
Sunscreen will always have its place, but it’s not enough on its own. Dermatologists agree: the smartest approach to sun safety is layering UPF clothing with sunscreen on exposed skin. A chic, lightweight sun shirt gives you all-day coverage, protects against both UVA and UVB rays, and never washes off.
✨ Ready to protect your skin without sacrificing style? Explore JOJU’s lab-tested UPF 50+ collection.
FAQ
Are sun shirts better than sunscreen?
Not better, but more reliable. Sunscreen wears off, but a UPF 50+ sun shirt offers continuous protection. Dermatologists recommend both together.
Can I wear a sun shirt in hot weather?
Yes. High-quality sun shirts are designed to be lightweight and breathable, keeping you cooler than cotton.
Do UPF sun shirts ever lose their protection?
It depends on how the UPF protection is generated. If it is from a chemical treatment applied at a mill, yes - UPF protection will wear off over time. If the UPF protection comes from the fibers in the fabric & the way they are knit together, then no - UPF protection will last the lifetime of the shirt. JOJU's UPF 50+ protection comes from its fibers and will not fade or wash out over time.
What areas do I still need sunscreen on if I’m wearing a sun shirt?
Apply sunscreen to your face, neck, hands and any exposed areas.
Why should I choose JOJU over other brands?
JOJU’s Italian performance fabric is sleek, breathable, and lab-certified UPF 50+. Unlike most UPF shirts, ours are designed to flatter — no oversized fits, no heavy branding.
