Kelsen Under the Sun Zinc Oxide Paste SPF 50 is a high-protection mineral sunscreen built for surfers and outdoor athletes who need serious UV defense in a reef-safe, non-toxic formula — 30% non-nano zinc oxide for maximum broad-spectrum coverage without chemical UV filters.

Key Features:

• 30% Non-Nano Zinc Oxide — one of the highest zinc concentrations available in a surf sunscreen; sits on the skin's surface for immediate, full-coverage UVA/UVB defense without absorption into the bloodstream
• SPF 50 Protection — rated for high-UV exposure environments including tropical destinations, high-altitude surfing, and extended midday beach time
• Water and Sweat Resistant (40 minutes) — formulated to hold through surf sessions; reapply after extended water exposure or heavy sweating
• Reef Safe — compliant with Hawaii regulations; free of oxybenzone, octinoxate, and all chemical UV filters that damage coral reef ecosystems
• 100% Microplastic Free — no synthetic particles in the formula; fully biodegradable after application
• 3x More Product — larger format than the average face stick; more value per ounce for daily surfers who use sunscreen consistently
• Credo Clean Standard — formulated to meet Credo's strict clean beauty standards; paraben-free, cruelty-free, suitable for all skin types

Kelsen was founded by surfers and built specifically for the ocean environment. Under the Sun is their flagship formula — the zinc you reach for on serious sun days when you want maximum protection and the peace of mind that comes from a fully clean ingredient list.

Application: Apply generously to all exposed skin before sun exposure. Reapply every 40 minutes during water activity or every 2 hours during dry activity. Don't under-apply — most sun protection failures are from using too little.