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Research · Blue beauty

The rise of blue beauty: what the evidence says.

“Blue beauty” is a marketing phrase for skincare that puts the ocean first, after “clean” and “green”. This guide leaves the slogans aside and checks what the science shows about plastic, sunscreen filters and mineral ingredients, and what the law says about ocean-friendly claims. Every claim cites its source.

A clear glass bottle of pale sea-blue water standing on wet cream sand at the shoreline with a soft wave behind

  • 4.8 to 12.7 million

    Metric tons of land-based plastic estimated to enter the ocean in 2010, from 275 million generated in 192 coastal countries.4

  • 0.8 to 19.2 µg/L

    Oxybenzone measured at Hawaiian coral reef sites. US Virgin Islands sites ranged from 75 µg/L to 1.4 mg/L.1

  • 1 Jan 2021

    Hawaii’s ban on selling sunscreens with oxybenzone or octinoxate begins.2

  • 27 Sep 2026

    Date from which EU Member States apply the ban on unsupported generic environmental claims.6

The short answer

  • The concern is real, and narrower than the slogans. Oxybenzone is toxic to coral larvae and cells in the laboratory,1 but the National Academies found the wider ecosystem impact of UV filters is not well understood.3
  • Some places have acted. Hawaii bans the sale of sunscreens with oxybenzone or octinoxate from 2021,2 Palau bans the import and manufacture of reef-toxic sunscreens,8 and Canada banned plastic microbeads in toiletries.7
  • “Mineral” does not settle it. In one laboratory study on coral, coated titanium dioxide caused no significant change, and zinc oxide’s effect depended on particle size.9
  • Claims need proof. Canada puts the proof on the company making an environmental claim,5 and the EU prohibits generic claims such as “environmentally friendly” without recognised excellent performance.6

01 · What it means

Three ways beauty meets the ocean.

None of the laws and studies cited on this page define “blue beauty”. We treat it as a marketing term and sort what brands say under it into three questions that can be checked: what happens to plastic, what happens to ingredients that wash off in the sea, and whether the claim itself is backed by proof.

This page does not rank brands, and it does not repeat market-size or consumer-survey figures. We could not trace those figures to an original source we could read, so we left them out.

A quiet shoreline with gentle foam at the water’s edge on pale sand in early morning light (AI-generated illustration)

  1. Plastic

    Packaging and microplastics are the most visible link between beauty and the sea. The best-cited estimate is a range, not a single figure: 4.8 to 12.7 million metric tons entered the ocean from land in 2010.4 Canada banned the sale of toiletries containing plastic microbeads from 1 July 2018.7

  2. Chemicals

    Laboratory work shows the UV filter oxybenzone is toxic to coral larvae and cells.1 Hawaii and Palau have acted on sunscreen ingredients.28 The National Academies found the wider ecosystem impact is not well understood.3

  3. Claims

    “Ocean-friendly” has no single legal meaning, but the claim is not unregulated. Canada’s Competition Act puts the burden of proof on whoever makes an environmental claim,5 and the EU prohibits generic environmental claims without recognised excellent performance.6

02 · Sunscreen filters

What the oxybenzone work actually measured.

A healthy coral reef seen from above in clear shallow turquoise water (AI-generated illustration)

In the laboratory

  • Oxybenzone is a photo-toxicant: effects on coral larvae (planulae) are worse in the light. It deformed the larvae, increased bleaching with dose, damaged DNA and induced skeleton formation around the planula.1
  • For larvae in the light, the concentration lethal to half (LC50) was 3.1 mg/L at 8 hours and 139 µg/L at 24 hours. The concentration causing deformity in 20% (EC20) at 24 hours was 6.5 µg/L in the light.1
  • Cells from 7 coral species had 4-hour LC50s of 8 to 340 µg/L in the light.1

In the water, and the caveat

  • The same study measured oxybenzone at 0.8 to 19.2 µg/L at Hawaiian sites and 75 µg/L to 1.4 mg/L in the US Virgin Islands.1 One author is from Haereticus Environmental Laboratory, which ran the work.1
  • A 2022 National Academies review found that the ecosystem impacts of UV filters are not well understood, and recommended that the US Environmental Protection Agency carry out an ecological risk assessment.3 It did not endorse bans.
  • Hawaii acted anyway. Its Act 104 prohibits the sale of sunscreens containing oxybenzone or octinoxate from 1 January 2021.2

How to read this. A concentration that kills larvae in a dish is not a reef-wide verdict, and a reef-wide uncertainty is not proof of safety. Both the harm in the laboratory1 and the gap in the wider evidence3 are findings.

Sunscreen still matters for skin health. For amounts, SPF and skin cancer risk, see our sunlight and skin guide.

03 · Washing off

What goes down the drain goes somewhere.

Sunscreen gets the headlines, but the question is wider. Anything that is washed off the skin or hair, in the shower, the sink or the sea, joins the wastewater stream. A brand does not need to sell sunscreen to be part of this picture.

Clear water running off a smooth glass surface in gentle streams into a calm pale blue sea (AI-generated illustration)

Every kind of personal care product

A 2021 review lists the personal care products it covers: hair and skin care, baby care, UV blocking creams, facial cleansers, insect repellents, perfumes, fragrances, soap, detergents, shampoos, conditioners and toothpaste.12 It reports that the growing availability and variety of these products raises their loading into wastewater systems and so into the environment, and that they release biologically active and inactive ingredients with adverse effects on human, wild and marine life.12

Sunscreen filters in the water

A 2023 review states that studies have found multiple UV filters in water sources globally, and that many laboratory studies implicate them in coral bleaching, the food chain and human health, though many of those studies used concentrations much higher than those in the natural environment.13 A 2021 review adds that organic UV filters have been quantified in water, sediments and the tissues of aquatic organisms.15

Beyond coral

A 2022 review of oxybenzone reports that it has been found to bioaccumulate in marine animals such as fish and mussels, where it may act as an endocrine disruptor, and that in plants exposure has been associated with decreased photosynthesis, inhibited seed germination and impaired growth.14

Rinse-off plastics

A 2022 study describes plastic microbeads in cosmetics as one of the main contributors to primary microplastic pollution in aquatic environments. It checked 163 body scrub and face wash products in the United Arab Emirates and found microplastic in fewer products in 2019 and 2020 than in 2018, with no new products containing it. Its authors link that to wider legislation.16

What brands can take from this. The reviews we read point to two practical ideas. One is clearer labelling: the 2021 review suggests that all intended ingredients, their concentrations and use instructions be stated on packaging.12 The other is treatment: it reports that granular activated carbon filtration and algae-based systems may help remove these contaminants from water.12

The honest limits. A review of sunscreen risk in the marine environment notes that laboratory studies of single filters report anything from significant acute effects to no observed effects, that methods differ, and that short laboratory tests may not reflect long-term exposure to finished products and other stressors in the field.15 We did not find a source that measures how much of any one brand’s product reaches the sea.

Related: sunlight and skin guide, types of seaweed in skincare and types of light therapy.

04 · Mineral ingredients

Zinc oxide and titanium dioxide, size matters.

Fine white mineral powder in a small pale blue ceramic dish beside sea glass (AI-generated illustration)

Mineral filters are often marketed as the ocean-safe alternative. The studies we read show a more specific picture, and every one of them is a small laboratory study, not a reef survey.

Coral, 7 days

A 2025 study exposed the coral Pocillopora damicornis to particle concentrations of 5 to 1,000 µg/L. Coated titanium dioxide (60 nm) caused no significant metabolome change. Both zinc oxide sizes shifted the metabolome of the coral’s symbiotic algae. Zinc oxide nanoparticles (60 nm) showed signs of bleaching from 300 µg/L, while larger particles (250 nm) showed only mild effects at 1,000 µg/L.9

Coral symbiont alga

A 2026 study on Symbiodinium kawagutii, the alga that lives in coral, found zinc oxide nanoparticles suppressed growth, disrupted photosynthesis and induced oxidative stress.10 It studied the alga alone, not a coral.

Coral membranes

A 2017 study on the coral Seriatopora caliendrum found zinc oxide nanoparticles changed the lipid profile of its cell membranes. Its authors suggest chronic effects could follow long-term exposure.11

What this supports. Particle size and coating changed the result in the 2025 study, so “mineral” alone tells you little.9 What it does not show is that any mineral sunscreen has damaged a real reef. The authors of that study say its aim is to inform which mineral filters companies choose.9

05 · The rules

Where law touches the ocean and the claim.

Each row was read from the legislation or the official record. We cover only the places we could read, so this is not a complete list.

Laws on ocean-related ingredients and environmental claims, by place
PlaceWhat the rule saysNote
Hawaiʻi, United StatesAct 104 (2018) prohibits the sale of sunscreens containing oxybenzone or octinoxate, from 1 January 2021.2Includes a prescription exception.2
PalauThe Responsible Tourism Education Act of 2018 prohibits the importation and manufacture of reef-toxic sunscreens.8The record we read gives no start date and does not name the chemicals, so we state neither.8
Canada: plastic microbeadsThe Microbeads in Toiletries Regulations prohibit the sale of toiletries containing microbeads from 1 July 2018, and from 1 July 2019 for those that are also natural health products or non-prescription drugs.7Prescription drugs are outside the regulations. “Microbead” is defined by reference to the Canadian Environmental Protection Act’s list of toxic substances.7
Canada: environmental claimsUnder section 74.01 of the Competition Act, a claim about a product’s environmental benefit must be based on an adequate and proper test, and the proof lies on the person making it. A claim about a business’s environmental benefit must be based on adequate and proper substantiation.5We read the current section text only and did not verify when each paragraph was added.
European UnionDirective (EU) 2024/825 adds to the banned practices a generic environmental claim for which the trader cannot demonstrate recognised excellent environmental performance. Member States apply the measures from 27 September 2026.6The directive’s recital gives “environmentally friendly” as an example of a generic claim.6

06 · Reading a claim

Five questions to ask of any ocean claim.

Plain unlabelled glass skincare bottles and a jar arranged on sea glass and pale sand (AI-generated illustration)

  1. What exactly is being claimed?

    “Ocean-friendly” on its own is a generic claim. The EU now prohibits generic environmental claims without proof of recognised excellent performance.6 A specific claim, such as the absence of a named ingredient, can be checked.

  2. Who has to prove it?

    In Canada, the proof lies on the person making a product environmental benefit claim, and the claim must rest on an adequate and proper test.5

  3. Which ingredient, and what size?

    For mineral sunscreens, particle size and coating changed the coral result in one study.9 A label that names the ingredient but not its form leaves that open.

  4. Does it match the law where you live?

    Hawaii’s ban concerns oxybenzone and octinoxate.2 Canada’s concerns plastic microbeads.7 A product can meet one rule and say nothing about another.

  5. Is it about the product, or only the story?

    Canada separates claims about a product’s environmental benefit from claims about a business’s.5 A donation or clean-up promise is a business claim and does not tell you what the formula does in seawater.

07 · What we could not confirm

The gaps, stated plainly.

  • Market-size forecasts, consumer-survey percentages and social-media view counts about blue or sustainable beauty. We saw them only on blogs and brand pages, and could not read an original source, so we state none.
  • The “drops in a swimming pool” comparison often used for oxybenzone. We could not trace it to a study, so we give the measured concentrations instead.1
  • Whether ocean-bound plastic has a lower environmental footprint than ordinary recycled plastic, and what the term formally means. We did not find a standard or official definition we could read.
  • Class-action lawsuits over “reef-friendly” labels. We found no court record we could read, so we make no statement about them.
  • Third-party reef-safe certifications and their criteria, including any list of ingredients they exclude.
  • Whether plant-derived replacements for shark-derived squalene are better for the ocean, and how much squalene still comes from sharks.
  • The Canadian Competition Act’s dates of change, and how the EU rules will be enforced in each Member State.
  • Palau’s start date and the list of chemicals under its sunscreen ban.8

Vanu Health’s DermaGlass® masks are hydrating skincare. This page makes no “reef-safe” or “ocean-friendly” claim about them or any other Vanu Health product.

08 · Questions

Frequently asked questions.

Is “reef-safe” a regulated term?

We found no law that defines it. What we did verify is that environmental claims are regulated more generally. In Canada, a claim about a product’s environmental benefit must be based on an adequate and proper test, and the proof lies on the person making the claim. In the EU, from 27 September 2026, a generic environmental claim such as “environmentally friendly” is prohibited unless the trader can demonstrate recognised excellent environmental performance. 56

Which sunscreen ingredients have been banned for ocean reasons?

Hawaii’s Act 104 prohibits the sale of sunscreens containing oxybenzone or octinoxate, from 1 January 2021, with an exception for prescriptions. Palau’s Responsible Tourism Education Act of 2018 prohibits the importation and manufacture of reef-toxic sunscreens. The record we read for Palau does not give a start date or name the chemicals. 28

Do the studies prove sunscreen is killing coral reefs?

The laboratory evidence shows oxybenzone harms coral larvae and coral cells at measured concentrations. A 2022 National Academies review is more cautious about the wider picture: it found that the ecosystem impacts of UV filters are not well understood, and it recommended an ecological risk assessment by the US Environmental Protection Agency. It did not recommend bans. 13

Are mineral sunscreens automatically safe for reefs?

Not automatically. In one 2025 laboratory study on a reef-building coral, coated titanium dioxide caused no significant metabolome change, while zinc oxide nanoparticles showed signs of bleaching from 300 µg/L and larger zinc oxide particles had only mild effects at the highest dose, 1,000 µg/L. Other laboratory studies report zinc oxide nanoparticles impairing a coral symbiont alga and changing coral membrane lipids. These are small laboratory studies, not reef surveys. 91011

How much plastic reaches the ocean?

A 2015 estimate in Science put land-based plastic waste entering the ocean in 2010 at 4.8 to 12.7 million metric tons, out of 275 million metric tons generated in 192 coastal countries. Figures quoted as a single number are usually a midpoint of that range. 4

Does Vanu Health make a “blue beauty” or “reef-safe” claim?

No. This page reports what laws and studies say. It makes no “reef-safe” or “ocean-friendly” claim about any Vanu Health product.

Vanu Health · Our stand

We believe blue beauty is the future of skincare.

Vanu Health builds marine bio-active skincare, so what happens to the water that skin care ends up in matters to us. We want to stand by blue beauty, support it, and help more people understand it.

  • We stand by it

    We believe skincare should be judged by what it leaves behind as well as what it does for skin. That is the idea at the centre of blue beauty.

  • We support it

    We hold our own claims to the standard used on this page: nothing is stated without a source, and what the research does not confirm is said plainly.

  • We spread it

    The Research Desk puts the evidence in plain language, free to read, so anyone can ask the same questions of any label, ours included.

Mindful of the water it ends up in, clear about its evidence, and honest about its limits: that is the skincare we want to see more of.

Meet Vanu Health Our products

Keep reading

Related research and reading

Sources

Where every claim comes from.

Numbers in brackets link to these entries. Journal studies were read as their PubMed record, with the title, journal, date and abstract, and study details come from PubMed, the US National Library of Medicine. Laws and reports were read on the page linked. Dates are those shown on the source.

All sources across the Research Desk are collected, by page, in the master source list.

  1. [1] Archives of Environmental Contamination and Toxicology (Downs and colleagues, Haereticus Environmental Laboratory). Toxicopathological effects of the sunscreen UV filter, oxybenzone (benzophenone-3), on coral planulae and cultured primary cells and its environmental contamination in Hawaii and the U.S. Virgin Islands. February 2016.
  2. [2] State of Hawaiʻi Legislature. Act 104 (2018): prohibiting the sale of sunscreens containing oxybenzone or octinoxate. 2018.
  3. [3] National Academies of Sciences, Engineering, and Medicine. Review of fate, exposure, and effects of sunscreens in aquatic environments and implications for sunscreen usage and human health. 2022.
  4. [4] Science (Jambeck and colleagues). Marine pollution. Plastic waste inputs from land into the ocean. February 2015.
  5. [5] Government of Canada, Justice Laws Website. Competition Act, section 74.01: misleading representations, including representations about the environmental benefit of a product.
  6. [6] Official Journal of the European Union. Directive (EU) 2024/825 empowering consumers for the green transition (generic environmental claims, Annex I point 4a, and application from 27 September 2026). 2024.
  7. [7] Government of Canada, Justice Laws Website. Microbeads in Toiletries Regulations (SOR/2017-111). Registered 2 June 2017.
  8. [8] UNEP LEAP, Law and Environment Assistance Platform (national legislation record). Palau: Responsible Tourism Education Act of 2018 (RPPL No. 1-30, as the record gives it). 2018.
  9. [9] Science of the Total Environment (Guillier and colleagues). Mineral UV filters and their effects on Pocillopora damicornis metabolome. June 2025.
  10. [10] Ecotoxicology and Environmental Safety (Wen and colleagues). Unveiling zinc oxide nanoparticle toxicity in Symbiodinium kawagutii: proteomic insights and coral reef implications. January 2026.
  11. [11] Aquatic Toxicology (Tang and colleagues). Membrane lipid profiles of coral responded to zinc oxide nanoparticle-induced perturbations on the cellular membrane. March 2017.
  12. [12] Iranian Journal of Pharmaceutical Research (Khalid and Abdollahi), via PubMed. Environmental Distribution of Personal Care Products and Their Effects on Human Health. 2021.
  13. [13] Photochemical & Photobiological Sciences (Shetty and colleagues), via PubMed. The effects of UV filters on health and the environment. June 2023.
  14. [14] Science of the Total Environment (Scheele and colleagues), via PubMed. Environmental impacts of the ultraviolet filter oxybenzone. December 2022.
  15. [15] Current Problems in Dermatology (Renegar and Dudley), via PubMed. Interpreting Risk from Sunscreens in the Marine Environment. October 2021.
  16. [16] Environmental Science and Pollution Research (Habib and colleagues), via PubMed. Trends of microplastic abundance in personal care products in the United Arab Emirates over the period of 3 years (2018-2020). July 2022.

This page is general information from the Vanu Health Research Team. It is not medical or legal advice. The images are AI-generated illustrations, not study images. Last updated October 30, 2026.