Safe Sunscreen SPF 50+

When Kevin Brodwick started Thinkbaby in 2008, the American sunscreen market was bifurcated in a way that frustrated him. On one side were the chemical sunscreens — cosmetically elegant, lightweight, easy to apply, but full of UV filters whose long-term safety profiles were the subject of ongoing debate and increasingly contentious environmental concerns about coral reef damage. On the other side were the mineral sunscreens — clinically appealing on paper, with zinc oxide and titanium dioxide as the active ingredients, but in practice almost universally formulated with fragrance, parabens, or other inactive ingredients that defeated the whole point for parents trying to put something genuinely clean on their children's skin. There wasn't a third option. So Brodwick made one. The Safe Sunscreen SPF 50+ launched as Thinkbaby's flagship product and immediately became something the existing market hadn't really seen: a high-SPF, water-resistant, fragrance-free, mineral-only sunscreen that didn't ask you to compromise on either protection or ingredient quality. The fact that it became the first sunscreen ever to pass Whole Foods Premium Body Care criteria wasn't a marketing achievement — it was a signal that the standard had been raised.

A decade and a half later, the formula is essentially unchanged, which tells you something. In a market that churns through sunscreen launches every season, the Thinkbaby Safe Sunscreen has held its position not through clever rebrands or texture upgrades but through the simple persistence of a formulation that does what it claims. The active ingredient is twenty percent zinc oxide, the high end of what's commonly used in mineral sunscreens, and the inactive list is built around aloe vera, sunflower and olive oils, methylpropanediol, glycerin, vitamin E, and vitamin C. There's no fragrance. There are no chemical UV filters. The water resistance carries the maximum eighty-minute label permitted by the FDA, which holds up in real swimming and sweating conditions. For body use during outdoor activities, vacations, and the daily summer life of children and adults with sensitive skin, this is one of the most defensible sunscreens you can put on.

Application is the part that requires patience. The lotion comes out of the tube thick and white, and it takes deliberate massage to spread it evenly across body skin. Most users learn to apply it in sections — one arm, one leg, the chest, the back — rather than trying to cover everything at once. The white cast is honest and visible, especially on medium and deep skin tones, and the brand has never pretended otherwise. For body use on a beach day or at the pool, this typically isn't a meaningful problem. For face use, it's why Thinkbaby eventually launched a separate Everyday Face version with a slightly refined texture. The water resistance, once the formula has set on the skin for the recommended fifteen minutes before sun exposure, holds up in actual water — not just FDA-test water but real ocean swims and sweaty hikes. Reapplication every eighty minutes during water exposure is non-negotiable, and reapplication after toweling off is necessary regardless of what the label says about water resistance.

The sensitive-skin credentials are the other thing that has kept this product on shelves for so long. The fragrance-free formulation, the absence of chemical UV filters, and the soothing aloe and vitamin E content make it one of the few sunscreens that pediatricians and dermatologists routinely recommend for infants over six months, eczema-prone children, post-procedure adult skin, and pregnancy use. The brand has been independently tested repeatedly by Consumer Reports and EWG, and while the test results have varied across years and methodologies, the product has consistently held up as one of the better mineral options on standardized testing. The community trust around this brand is real and earned, and it accounts for much of the loyalty the product enjoys despite its cosmetic limitations.

The value is excellent. Twelve dollars for three ounces is genuinely cheap for the quality of formulation here, especially considering the fragrance-free, water-resistant, high-zinc profile. There are larger sizes available for families that go through sunscreen quickly during summer. The brand also offers spray and stick formats of essentially the same formulation for users who prefer alternative application methods, though the spray version has slightly different inactive ingredients and the stick is best suited to focused application on the face and ears. The lotion remains the original and the most universally recommended format.

This sunscreen belongs in the bag of any family with young children, anyone with sensitive or reactive body skin, anyone who prioritizes mineral-only and fragrance-free formulations, anyone planning extended outdoor activity who needs reliable water resistance, and anyone who has tried other mineral sunscreens and reacted to one ingredient or another. It does not belong in the routine of someone who needs an invisible finish on medium or deep skin tones, or someone who needs a sunscreen that wears smoothly under daily makeup. For its intended audience, it remains one of the most justifiable picks in the entire sunscreen category. Fifteen years of consistent quality is a hard track record to argue with.

Formula

The Science

Zinc oxide is the only single-ingredient active ingredient approved by the FDA that provides true broad-spectrum protection across the entire UVA and UVB range without the use of additional chemical UV filters. The 20% concentration in this product is at the upper end of what's commonly formulated in mineral sunscreens — most over-the-counter mineral SPFs use between 10% and 18% zinc oxide. Higher concentrations correlate with stronger broad-spectrum protection, particularly in the long-wave UVA range (UVA1, 340-400nm) where many chemical filters underperform. The 80-minute water resistance rating is the maximum permitted by the FDA and is achieved here through the lipid structure of the inactive base — the sunflower and olive oils, cetyl dimethicone, and emulsifying waxes create a film that resists removal by water and sweat. The water resistance test that produces this rating involves measured SPF before and after timed water immersion, so an 80-minute label means the product retained its labeled SPF after that duration of immersion under standardized conditions. The vitamin C and vitamin E in the inactive list serve a documented adjunct role in photoprotection. Topical antioxidants have been shown in dermatologic research to neutralize free radicals generated by UV exposure that even physical sunscreens don't fully prevent — UV radiation that reaches the skin produces reactive oxygen species independent of whether it's blocked by a filter or not, and antioxidants help mop up that oxidative damage. Reef safety is the other documented benefit of mineral-only formulations. Oxybenzone and octinoxate, two common chemical UV filters, have been shown in environmental research to contribute to coral bleaching and reproductive damage in marine ecosystems, and several jurisdictions including Hawaii have banned their sale on environmental grounds. Mineral sunscreens with non-nano zinc oxide are widely considered the appropriate alternative.

Dermatologist Perspective

Dermatologists and pediatricians routinely recommend high-concentration mineral sunscreens like this one for patients with sensitive skin, eczema, rosacea, post-procedure recovery, and infants over six months of age. The fragrance-free, mineral-only formulation profile is widely considered the safest choice during pregnancy and breastfeeding, when chemical UV filter absorption raises theoretical concerns. Board-certified dermatologists also note that the high zinc concentration provides anti-inflammatory benefits beyond UV protection, which can be useful for inflammatory skin conditions. The trade-off acknowledged across the dermatologic community is the cosmetic compromise — patients with deeper skin tones or those who want a sunscreen that wears invisibly under makeup are typically directed to tinted mineral options or hybrid sunscreens.

Guidance

Thinkbaby's founder Kevin Brodwick set out in 2008 to create a sunscreen he could trust on his own children, after finding the existing mineral sunscreen market either ineffective, fragranced, or full of preservatives he didn't want near a baby's skin. The Safe Sunscreen SPF 50+ launched as the brand's flagship and quickly became a reference product in the natural and parent-focused communities, eventually defining what mainstream consumers came to expect from a clean mineral sunscreen.

About Thinkbaby Established Brand (5–20 years)

Thinkbaby launched in 2008 and the Safe Sunscreen became its flagship product, notable as the first sunscreen to pass Whole Foods Premium Body Care criteria. The product has been independently tested by Consumer Reports and EWG and has earned strong long-term credibility in the mineral sunscreen category.

Brand founded: 2008 · Product launched: 2010

Myth vs. Reality

Myth

Mineral sunscreens can't be water resistant.

Reality

They absolutely can — this product is rated for 80 minutes of water resistance, the maximum allowed by the FDA. The water resistance comes from the lipid structure of the formula, not from chemical filters.

Myth

SPF 50 is meaningfully better than SPF 30 for daily use.

Reality

SPF 50 blocks about 98% of UVB rays compared to SPF 30's 97%. The marginal protection difference matters most during extended outdoor activity, not for incidental daily exposure. Where SPF 50+ does help is in providing a buffer for the under-application that almost everyone is guilty of.

FAQ

Common Praise

"truly broad-spectrum protection"

"safe for kids and adults"

"no fragrance"

"water resistant for real activities"

"trusted by parents for over a decade"

Common Complaints

"thick and white"

"hard to rub in"

"olive oil may bother some users"

"not great under makeup"

Notable Endorsements

EWG Verifiedfirst sunscreen to pass Whole Foods Premium Body Care criteriaConsumer Reports tested

Appears In

best mineral sunscreen for kids best water resistant mineral sunscreen best reef safe sunscreen best pregnancy safe body sunscreen

Related Conditions

sensitivity rosacea post procedure sun damage

Related Ingredients

zinc oxide vitamin e vitamin c