Journal
Research, guides, and deep reads on ocean-friendly beauty.
Algae Oil for Skin: Chlorella and Spirulina Guide
Chlorella oil and spirulina extract offer real skincare benefits backed by clinical data. Here's how to pick the right algae oil products.
How Sunscreen Water Resistance Gets Tested
The FDA's 80-minute water resistance test uses a whirlpool, volunteers, and no towels. Here is exactly what the label claim means.
Summer UV Protection Guide: Index, Timing, Tips
UV index hits 8-10 across most U.S. coastal states by June. When to reapply, how beach and pool differ, and what the numbers mean.
How Oxybenzone in Sunscreen Bleaches Coral Reefs
Oxybenzone damages coral at concentrations as low as 62 parts per trillion. Here's how this common sunscreen ingredient causes bleaching, DNA damage, and larval death.
Chemical vs Mineral Sunscreen: Full Comparison
Chemical and mineral sunscreens protect skin through different mechanisms. Their safety profiles, photostability, and marine impact differ sharply.
Best Reef-Safe Sunscreens for Sensitive Skin
Mineral-only, fragrance-free sunscreens that protect sensitive skin without harming reefs. What to look for on the label and what to avoid.
SPF Myths Debunked: What SPF Numbers Mean
SPF 100 blocks 99% of UVB. SPF 50 blocks 98%. The real protection gap is smaller than you think, and reapplication matters more than the number.
How Zinc Oxide Blocks UV Radiation
Zinc oxide protects skin by absorbing UV photons, not reflecting them. The science behind mineral sunscreen's real mechanism of action.