Source: https://reeflabel.com/products/thinksport-thinkkids-brush-on-sun-shield-spf-30/ [Thinksport / Think](https://reeflabel.com/brands/thinksport/) # Is Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 Reef Safe? **Yes, by the law.** Allowed in all 9 places we track. [See why](#where) - Allowed: Hawaii - Allowed: Maui County - Allowed: Hawaiʻi County - Allowed: U.S. Virgin Islands - Allowed: Palau - Allowed: Aruba - Allowed: Guam - Allowed: Northern Mariana Islands - Allowed: Thailand Mineral-only actives Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 meets every sunscreen law we track, including the mineral-only rules in Maui County, Hawaiʻi County (Big Island) and Palau. It uses one mineral UV filter: zinc oxide 24.5%. It is a sunscreen for kids powder made by Thinksport / Think (thinkOperations, LLC). SPF**30** Water resistance**—** Format**powder** Type**kids** Where Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 is allowed | Location | Verdict | Why | | --- | --- | --- | | [Hawaii (statewide)](https://reeflabel.com/locations/hawaii-state/) | Allowed | No restricted ingredients found. | | [Maui County (Maui, Molokaʻi, Lānaʻi)](https://reeflabel.com/locations/maui-county/) | Allowed | No restricted ingredients found. | | [Hawaiʻi County (Big Island)](https://reeflabel.com/locations/hawaii-county/) | Allowed | No restricted ingredients found. | | [U.S. Virgin Islands](https://reeflabel.com/locations/us-virgin-islands/) | Allowed | No restricted ingredients found. | | [Palau](https://reeflabel.com/locations/palau/) | Allowed | No restricted ingredients found. | | [Aruba](https://reeflabel.com/locations/aruba/) | Allowed | No restricted ingredients found. | | [Guam](https://reeflabel.com/locations/guam/) | Allowed | No restricted ingredients found. | | [Northern Mariana Islands (CNMI)](https://reeflabel.com/locations/northern-mariana-islands/) | Allowed | No restricted ingredients found. | | [Thailand (all national parks)](https://reeflabel.com/locations/thailand-national-parks/) | Allowed | No restricted ingredients found. | Guidance and repealed rules (4)
Mexico: federal marine protected areas (e.g., Isla Mujeres, Punta Cancún & Punta Nizuc)Meets guidance
Bonaire (Bonaire National Marine Park)Meets guidance
U.S. National Parks with coral reefs (NPS guidance)Meets guidance
Key West, FloridaNo rule in force
Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 active ingredients | Ingredient | Amount | Type | | --- | --- | --- | | [Zinc Oxide](https://reeflabel.com/ingredients/zinc-oxide/) | 24.5% | Mineral | Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 inactive ingredients Aluminum Starch Octenylsuccinate, Mica, Silica, Lauroyl Lysine, Kaolin, Calcium Carbonate, Caprylic/Capric Triglyceride, CI 77492, Triethoxycaprylylsilane, CI 77491, CI 77499, Bisabolol, Ceramide NP, Ascorbic Acid, Tocopheryl Acetate, Capryloyl Glycine, Undecylenoyl Glycine, Sodium Benzoate, Potassium Sorbate Highlighted ingredients are regulated somewhere; red ones are restricted in at least one location we track. Dotted ones are listed below. Fragrance allergens, essential oils and alcohol None of the 80 fragrance allergens on the EU list appear on this label, and it lists no fragrance, essential oil or drying alcohol. The EU requires these allergens to be named on cosmetic labels above 0.001% in leave-on products ([Regulation 1223/2009, Annex III](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02009R1223-20250501)). They can cause skin reactions in people who are sensitized; they don’t affect whether a sunscreen is legal anywhere we track. Note: Thinkkids line, sold on thinksun.com. Brush-on mineral powder. Page gives no water-resistance claim and does not state 'broad spectrum' (broadSpectrum false, unconfirmed). Size not stated in page text. Common questions about Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 Is Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 reef safe? “Reef safe” isn’t a regulated label claim, so we answer by law instead. It meets every sunscreen law we track, including the mineral-only rules in Maui County, Hawaiʻi County (Big Island) and Palau. Its only UV filters are minerals, which every law we track permits. Is Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 legal in Hawaii? Under Hawaii’s statewide law (Act 104, which bans oxybenzone and octinoxate) it is allowed. In Maui County (Maui, Molokaʻi, Lānaʻi), which allows only mineral sunscreens, it is allowed. In Hawaiʻi County (the Big Island), which has a mineral-only rule for sales, it is allowed. Oʻahu and Kauaʻi have no county rule, so only the statewide law applies there. Does Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 contain oxybenzone? No. It contains neither oxybenzone nor octinoxate, the two chemicals banned under Hawaii’s statewide law. Is Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 a mineral or chemical sunscreen? Mineral. Its UV filter is zinc oxide 24.5%. Is the zinc oxide in Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 non-nano? Its Drug Facts ingredient list doesn’t state particle size, and US labels aren’t required to. Many brands make non-nano claims elsewhere on the pack or website. No sunscreen law we track regulates nano particles. What is the UPC for Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30? The UPC barcode is 810009377214. Different sizes and scents carry different barcodes. Source Ingredients transcribed from [thinksun.com](https://thinksun.com/products/thinkkids-brush-on-sun-shield-spf-30) on September 23, 2026. Formulas change. The label on the bottle you buy is the final word. Product identifiers UPC - 810009377214 UPCs from the brand’s or a retailer’s product listing. Check another label Paste any ingredient list into the checker for an instant verdict. [Check if a sunscreen is reef safe](https://reeflabel.com/checker/) Cite this page Reef Label. “Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30.” Accessed September 23, 2026. https://reeflabel.com/products/thinksport-thinkkids-brush-on-sun-shield-spf-30/ Mineral alternatives to Thinksport / Think Thinkkids Brush-On Sun Shield SPF 30 [ All Good SPF 50 Kids Mineral Sunscreen Butter Stick SPF 50 · stick · Mineral Allowed in all 9 places we track ](https://reeflabel.com/products/all-good-spf-50-kids-mineral-sunscreen-butter-stick/)[ Raw Elements Baby + Kids SPF 30+ Tin SPF 30 · tin · Mineral Allowed in all 9 places we track ](https://reeflabel.com/products/raw-elements-baby-kids-spf-30-tin/)[ Badger Kids Mineral Sunscreen Cream SPF 40 SPF 40 · cream · Mineral Allowed in all 9 places we track ](https://reeflabel.com/products/badger-kids-mineral-sunscreen-cream-spf-40/)[ Banana Boat Kids Mineral Sunscreen Lotion Spray SPF 50 SPF 50 · spray aerosol · Mineral Allowed in 8 of 9 placesNot allowed: Palau ](https://reeflabel.com/products/banana-boat-kids-mineral-sunscreen-lotion-spray-spf-50/)