Quick summary: Emerging guidance from beauty and environmental experts highlights that conventional chemical sunscreens containing oxybenzone and octinoxate wash off into oceans and contribute significantly to coral bleaching and marine ecosystem destruction. To combat this underwater habitat degradation, consumers are urged to transition towards mineral-based formulas utilizing non-nano zinc oxide or titanium dioxide which safely reflect ultraviolet rays without introducing toxic microplastics into the water column. This shift in consumer behavior supports vital public policy and marine conservation goals, demonstrating that responsible personal healthcare practices can simultaneously protect fragile aquatic biodiversity and preserve the long-term environmental well-being of global coastal destinations.
As holidaymakers prepare for summer escapes or UK staycations, protecting skin from harmful UV rays remains essential. Yet the choice of sun cream can also determine the health of underwater ecosystems, with certain common ingredients posing risks to coral reefs and marine life.
To mark World Oceans Day on 8th June, in-house beauty expert Rina Teslica at Cult Beauty has shared guidance on selecting reef-safe SPF, focusing on ingredients that safeguard both human skin and the planet’s oceans.
The problem with conventional sunscreens
Many conventional sunscreens contain chemicals including oxybenzone, octinoxate, and octocrylene. While effective at filtering UV rays, these ingredients are toxic to coral reefs and marine life, washing off into the ocean during swimming and snorkelling and disrupting fragile underwater habitats. Research confirms that oxybenzone and octinoxate contribute to coral bleaching and can affect marine organisms even at low concentrations, prompting many popular tourist destinations to introduce restrictions or bans on these ingredients.
What makes a sunscreen reef-safe
Reef-safe sun creams are designed to protect both skin and the environment. While the term is not officially regulated, it describes formulas that avoid ingredients known to harm underwater habitats. Most rely on mineral UV filters, typically zinc oxide and titanium dioxide, which reflect and block UVA and UVB rays. In some destinations with particularly fragile marine habitats, reef-safe formulas are now legally required.
Teslica says: “Go for an SPF that skips oxybenzone and octinoxate, and instead opt for a mineral formula with non-nano zinc oxide, as it’s the safest choice for protecting both your skin and the reefs.”
She adds that, as reef-safe is not a tightly regulated term, it is always worth checking the full ingredients list, and notes that tinted mineral SPFs are a great option for those who want a natural, skin-evening finish without the typical white cast. Thanks to their natural, non-toxic ingredients, mineral sun creams are also very gentle on sensitive skin, making them suitable for all skin types.
How to choose a reef-safe SPF
Rina’s checklist for choosing a reef-safe SPF
- Avoid oxybenzone, octinoxate, and any form of microplastic, and check the full ingredients list.
- Look for products containing non-nanoparticles, meaning particles larger than 100 nanometres, which sink and become part of ocean sediment rather than breaking down, posing less risk to marine life.
- Stick to mineral-based SPFs.
- Avoid parabens, silicones, and sulphates.
Recommended reef-safe SPFs
- Ultra Violette Future Fluid SPF 50+ Superlight Mineral SKINSCREEN for the face
- Sun Bum Original SPF 50 Sunscreen Lotion for the body
- Dr Dennis Gross Skincare All Physical Lightweight Wrinkle Defence SPF 30 for a mineral option
- Lancaster Sun Beauty Sun Protective Water SPF 50 for a formula without white cast
- Sun Bum Original SPF 30 Sunscreen Lotion for darker skin tones
- Supergoop Protec Tint Daily SPF Tint SPF 50 for a tinted face SPF suitable for wearing with makeup
With World Oceans Day highlighting the need for collective action, experts emphasise that responsible sun care combines personal protection with environmental awareness, and that small changes in everyday choices, such as sunscreen selection, can support marine conservation.