The Science Behind Spread Surf
Clean ingredients. Ancestral stability. Built for real time in the ocean.
Skin Absorption & Hormones
Your skin is a living, absorbing organ. What you put on it doesn’t just disappear. Many chemical UV filters are designed to penetrate below the surface and have been shown in studies to enter the bloodstream after application and interact with hormone signaling. Spread Surf is built around a surface-level mineral barrier that stays on the skin instead of relying on internal chemical absorption.
Mineral Barrier vs Chemical Absorption
There are two very different approaches to managing sun exposure:
Chemical UV Filters
• Designed to absorb into the skin
• Convert UV radiation into heat under the surface
• Can be systemically absorbed into the body
Mineral-Based Barriers
• Stay primarily on the surface of the skin
• Help physically reflect and disperse external sun exposure
• Work as a visible, physical layer between you and the elements
Spread Surf uses non-nano mineral ingredients to support external environmental protection instead of internal chemical reactions.
Seed Oils, Oxidation & Sun Stability
Many modern skin products are built on highly processed seed oils and industrial vegetable oils. These oils can be structurally fragile under heat, light, and oxygen. When they oxidize, they may:
• Degrade quickly in the sun
• Stress the skin barrier
• Create more instability on the skin surface
Surf conditions are extreme. Your skin barrier needs fats that stay stable in sun, salt, wind, and heat—not oils that easily break down.
Ancestral Fats vs Petrochemicals
Long before synthetic skincare existed, humans protected their skin with natural animal fats, plant waxes, and mineral compounds. Grass-fed Wagyu tallow closely mirrors the natural lipid structure of healthy human skin. This similarity allows it
to:
• Support the skin’s natural moisture barrier
• Absorb in a way the body recognizes
• Remain stable under sun, salt, and wind
• Provide long-lasting outdoor durability
Our Ingredient Standard
Every ingredient in Spread Surf must meet three non-negotiable standards:
• Safe for repeated, long-term external use
• Stable under sun, salt, and heat
• Recognizable and compatible with human biology
The Bottom Line
Spread Surf is a mineral-based surf skin barrier balm, not a chemical sunscreen. It’s built to support your skin naturally during long days in the ocean and under the sun, without relying on synthetic UV-absorbing chemicals, petroleum compounds, or unstable seed oils.
*The information on this page is for educational purposes only. Spread Surf products are cosmetic mineral skin barrier balms and are not intended to diagnose, treat, cure, or prevent any disease. Spread Surf is not marketed or sold as an FDA-approved sunscreen