Hawaiian Tropic Sheer Touch is not reef safe. While it avoids the two ingredients banned in Hawaii (oxybenzone and octinoxate), it contains other chemical filters that have demonstrated toxicity to coral and marine organisms. The “reef friendly” label on the packaging is based on a narrow definition that only accounts for those two banned chemicals, not the broader picture of ocean health.
What’s Actually in Hawaiian Tropic Sheer Touch
The Sheer Touch line uses four active chemical UV filters: avobenzone, homosalate, octisalate, and octocrylene. The exact percentages vary slightly by SPF level. The SPF 70 version, for example, contains avobenzone at 2.8%, homosalate at 9.5%, octisalate at 4.7%, and octocrylene at 8.5%. The SPF 50 lotion has similar ingredients in slightly lower concentrations.
None of these are mineral filters like zinc oxide or titanium dioxide, which sit on top of your skin and physically block UV rays. Instead, they’re chemical filters that absorb into your skin and convert UV radiation into heat. When you swim, these chemicals wash off into the water.
Why the “Reef Friendly” Label Is Misleading
Hawaiian Tropic’s parent company, Edgewell Personal Care, markets several of its sunscreens with a “Reef Friendly” logo that reads “No Oxybenzone or Octinoxate.” This claim appeared in 2020 after Hawaii banned those two specific ingredients. The label is technically accurate in a very limited sense: the product does not contain those two chemicals.
But this framing created enough concern that the Santa Clara County District Attorney in California sued Edgewell, alleging the “reef friendly” advertising was deceptive. The lawsuit argued that excluding just two harmful ingredients doesn’t make a product safe for reefs, especially when other ingredients in the formula also pose risks to marine life.
How These Ingredients Affect Coral
Research on the individual ingredients in Sheer Touch paints a troubling picture, particularly for two of them.
Avobenzone, which is present in every version of Sheer Touch, showed severe toxicity to Atlantic staghorn coral in laboratory testing. Corals exposed to avobenzone experienced tissue loss, reduced growth rates, swollen mucus-producing cells, and death. A study from Nova Southeastern University found that avobenzone was actually more acutely toxic to adult coral than the two ingredients Hawaii already banned. That’s a significant finding: the chemical that replaced the banned ones may be worse for reefs.
Octocrylene, the second most concentrated active ingredient in the SPF 70 formula at 8.5%, has its own set of problems. Research published in Ecotoxicology and Environmental Safety found that octocrylene is toxic to Symbiodinium, the microscopic algae that live inside coral tissue and provide corals with most of their energy through photosynthesis. At lower concentrations, octocrylene caused stress responses including damage to cell membranes and abnormal lipid accumulation. At higher concentrations, it killed the algae outright and disrupted their metabolic activity. When these symbiotic algae die or are expelled, coral bleaching follows.
Homosalate, present at concentrations up to 9.5%, has been flagged for low-level ecotoxicology concerns by the Environmental Working Group, though it has received less dedicated marine research than octocrylene or avobenzone.
What Hawaii’s Ban Does and Doesn’t Cover
Hawaii’s sunscreen law, which took effect January 1, 2021, prohibits the sale of sunscreens containing oxybenzone or octinoxate. These two chemicals were singled out because of early and well-publicized research linking them to coral damage. Hawaiian Tropic Sheer Touch complies with this law.
But the law was never designed to be a comprehensive standard for reef safety. It targeted the two most studied offenders at the time. Research has since expanded to show that other common UV filters, including avobenzone and octocrylene, also harm marine ecosystems. Compliance with Hawaii’s ban is a low bar, not a certification of environmental safety.
What Reef-Safe Sunscreen Actually Looks Like
There is no regulated definition of “reef safe” or “reef friendly” in the United States. Any sunscreen can use these terms on its packaging. If protecting marine environments matters to you, the most reliable approach is checking the active ingredients yourself.
Mineral sunscreens that use only zinc oxide, titanium dioxide, or both as active ingredients are widely considered the safest option for marine life. These minerals are not absorbed into the skin the way chemical filters are, and they don’t dissolve into seawater in the same manner. Look for “non-nano” on the label, which means the mineral particles are large enough that they’re less likely to be ingested by marine organisms.
- Avoid these chemical filters: oxybenzone, octinoxate, octocrylene, avobenzone, and homosalate all have documented or emerging evidence of marine toxicity.
- Look for these mineral filters: zinc oxide and titanium dioxide as the only active ingredients.
- Skip the marketing claims: “Reef friendly,” “ocean safe,” and “reef safe” are unregulated terms that don’t guarantee anything about the formula.
Mineral sunscreens tend to leave a white cast on skin and feel thicker than chemical options like Sheer Touch. That tradeoff is the main reason chemical sunscreens remain popular. Some newer mineral formulas have improved the texture significantly, though they still feel different from a lightweight lotion like Sheer Touch. If you’re swimming near coral reefs, especially in places like Hawaii, the Florida Keys, or the Caribbean, switching to a mineral sunscreen is the most straightforward way to reduce your impact.