← Back to Tools☀️ Protection Comparison
Sunscreen vs Sun Shirt Comparison
SPF and UPF measure different things. Compare the roles of sunscreen and clothing; neither number establishes a safe exposure time.
SPF 15SPF 100
UPF 15UPF 50+
Metric
☀️ Sunscreen (SPF 30)
👕 Sun Shirt (UPF 50)
Initial Protection
SPF 30: a standardized sunscreen measure, mainly of UVB protection; not an outdoor-time multiplier
UPF 50: about 1/50 of weighted UV passes through the rated fabric under test conditions
UV Coverage
Choose broad-spectrum sunscreen for UVA and UVB protection; SPF alone does not describe UVA coverage
UPF rates fabric UV transmission; garment openings and exposed skin are outside that coverage
Reapplication / Renewal
Every 2 hours, or after swimming/sweating
No sunscreen reapplication on covered skin; check garment fit and condition
Sweat Resistance
Use a water-resistant product and reapply after sweating as directed
Wetting and stretching can change protection; check the exact garment’s documented conditions
Water Resistance
Look for a 40- or 80-minute water-resistance label; this is independent of the SPF number
Quick drying does not establish wet UPF; choose a model documented for water use
Long-Term Cost
Ongoing purchase cost depends on exposed area and use
Garment cost and lifespan vary with wear and care
Convenience
Can be forgotten or run out; application time needed
Check coverage and condition during outdoor use
Use both where needed
For extended outdoor activity (fishing, hiking, running), a rated sun shirt offers useful covered-skin protection. Check its condition and fit, and use broad-spectrum, water-resistant SPF 30+ sunscreen on exposed skin alongside shade and suitable accessories.
AAD: broad-spectrum, SPF and water resistance · ARPANSA: clothing coverage and UPF