All Natural Sunscreen: What Actually Exists (And What's Just Marketing)
Here's the uncomfortable truth about "all natural sunscreen": in the strictest sense, it doesn't exist. Nothing you can pick off a tree or press from a seed reliably protects skin from UV — lab-tested natural oils top out around SPF 8. The closest real thing is a mineral sunscreen: non-nano zinc oxide (a mined, purified mineral) doing the broad-spectrum SPF 30 work, in a simple base of fats and oils your skin actually recognizes. In other words: let nature do everything except the SPF, and let zinc do that part.
That answer annoys people on both sides. The "natural living" crowd wants coconut oil to be enough (it isn't), and the beauty industry wants "natural" to mean whatever sells this quarter. Let's sort out what the word actually buys you.
What Is An All Natural Sunscreen, Really?
First problem: "natural" has no legal definition on a sunscreen label. None. The FDA regulates sunscreens as over-the-counter drugs, so the SPF number, the "broad spectrum" claim, and the water-resistance rating are all tested and enforced. The word "natural"? Anyone can print it. On anything.
Second problem: the phrase people actually search — natural sunscreen without chemicals — is a contradiction. Water is a chemical. Zinc oxide is a chemical. The vitamin E in your face oil is a chemical. When a label says "chemical-free," it's not describing the formula; it's describing what the marketing team thinks of you.
What people mean by natural sunscreen is usually specific and fair: no synthetic UV filters like oxybenzone, avobenzone, or octinoxate, and a base made of ingredients you can pronounce without a chemistry degree. That points you at one category — mineral sunscreen, where the UV filter is zinc oxide or titanium dioxide. We cover the full matchup in chemical vs mineral sunscreen.
Doesn't mineral sunscreen "reflect" the sun instead of absorbing it?
No, and this myth is everywhere (including, historically, on tallow skincare blogs — ours had to fix it too). Measurements published in Photodermatology, Photoimmunology & Photomedicine in 2016 showed zinc oxide and titanium dioxide protect you by absorbing roughly 95% of UV radiation and converting it to a trace of heat, not by bouncing it away like a tiny mirror. The real difference from synthetic filters isn't the mechanism. It's the molecule: zinc is a stable mineral that stays put on the skin's surface instead of soaking in.
The Best Natural Sunscreen Is A Mineral One
Why does "which molecule" matter? In 2020, FDA researchers published a randomized trial in JAMA showing that six common synthetic UV filters were absorbed into the bloodstream at levels above the agency's threshold for requiring additional safety data. That's not proof of harm — and anyone telling you chemical sunscreen is poison is skipping ahead of the science. But "we need more data on what this does inside your body" is a reasonable thing to want to opt out of, and mineral filters let you opt out without giving up real protection.
The American Academy of Dermatology recommends SPF 30 or higher — which blocks about 97% of UVB — reapplied roughly every two hours, and specifically points people with sensitive skin toward zinc oxide and titanium dioxide formulas because they tend to cause less irritation. So the best natural sunscreen isn't a hemp-oil hopeful from a farmers market. It's a boring, well-tested mineral formula worn correctly.
Here's the shopping filter that cuts through the label noise:
Is there a natural sunscreen without chemicals?
No, because there's no anything without chemicals. What exists is sunscreen without synthetic UV filters — that's mineral sunscreen, and it's a genuinely different product, not a marketing shade of the same thing. If a brand's main claim is "chemical-free," treat it as a small red flag: either they don't understand their own formula or they're hoping you don't.
What about natural sunscreen for face?
Same rules, plus two face-specific realities. One: white cast. Non-nano zinc particles are large (that's the point — they stay on the surface), so untinted mineral formulas can read ghostly, especially on deeper skin tones. A light tint solves most of it. Two: the base matters more on your face than anywhere else, because you wear it daily. A base built on grass-fed tallow carries a lipid profile close to your skin's own sebum, which is why it moisturizes instead of sitting there like paste — more on the zinc side of that in reef-safe non-nano zinc benefits.
Natural Alternatives To Sunscreen: What Works, What Doesn't
Now the part the internet gets wrong weekly. Plant oils do absorb a little UV, and researchers have actually measured how much. A 2010 study in Pharmacognosy Research ran common cosmetic oils through in-vitro SPF testing: coconut and olive oil came in around SPF 8, castor oil around 6, almond around 5, and sesame around 2. SPF 8 is not sun protection. It's a rounding error with a pleasant smell.
The natural alternatives that genuinely work aren't formulas at all. Shade works. Tightly woven clothing, hats, and sleeves work — fabric doesn't wear off at the two-hour mark. Timing works: the sun does most of its damage midday. Stack those first, then put mineral SPF 30 on whatever skin is still exposed. That stack is more "natural" than any DIY oil blend, and unlike the oil blend, it actually protects you. We ranked every option in the 10 best natural sunscreen alternatives.
Is beef tallow a natural sunscreen?
No — and we sell tallow for a living, so believe us when we say we'd love the answer to be yes. Tallow on its own has no tested, meaningful SPF. What tallow is brilliant at is being the base: it carries the zinc evenly, keeps skin comfortable under a mineral layer, and means the non-zinc part of the formula is made of ingredients you could technically eat. The full honest breakdown lives in does beef tallow work as sunscreen.
And while we're being honest: our own SPF 30 isn't "all natural" by the absolutist definition either. Zinc oxide is mined and then purified to cosmetic grade in a facility, not scooped from a riverbed. Mineral formulas also feel heavier than chemical sprays and leave more of a cast — if an invisible, weightless finish is your top priority, a synthetic-filter sunscreen will beat ours on feel every time. We think surface-staying zinc plus an edible-grade base is the better trade. But it's a trade, and you should know you're making one.
Quick answers
What is a natural sunscreen?
In practice, a mineral sunscreen: one that uses zinc oxide or titanium dioxide as the UV filter instead of synthetic filters like oxybenzone or avobenzone, ideally in a simple base of recognizable fats and oils. "Natural" itself has no legal definition on sunscreen labels, so check the active ingredients, not the front of the tube.
Is there a truly all natural sunscreen?
Not in the strictest sense. No unprocessed natural ingredient provides reliable, tested sun protection, and even zinc oxide is purified industrially. The honest version of "all natural" is a mineral SPF 30 where everything except the zinc is simple and food-grade.
What is the best natural sunscreen for face?
A non-nano zinc oxide formula at SPF 30 with broad-spectrum protection, in a base that moisturizes rather than chalks. A light tint helps with white cast, and dermatologists point sensitive skin toward mineral filters because they tend to irritate less.
Can I use coconut oil instead of sunscreen?
No. In lab testing, coconut oil measured around SPF 8, and dermatologists recommend a minimum of SPF 30. Coconut oil is a fine moisturizer and a dangerous sunscreen. Shade and clothing are legitimate natural alternatives; kitchen oils are not.
Is beef tallow a natural sunscreen?
No. Tallow alone has no meaningful tested SPF. It makes an excellent sunscreen base because its lipid profile is close to skin's own sebum, but the actual UV protection in a tallow sunscreen comes from zinc oxide.
Is mineral sunscreen better than chemical sunscreen?
Both protect when applied properly, and both work mainly by absorbing UV. The difference: synthetic filters have been shown to absorb into the bloodstream at levels the FDA wants more safety data on, while zinc oxide stays on the skin's surface and tends to irritate sensitive skin less. If those two things matter to you, mineral wins.
Sunscreen you could (technically) eat. Please don't — but you could.
Our SPF 30 Mineral Sunscreen ($24.99) is 21.6% non-nano zinc oxide on a grass-fed tallow base — broad spectrum, reef-safe, lightly cocoa-tinted so you skip the ghost look. Zinc does the protecting; everything else is close enough to food that our lawyers made us write this sentence.
Keep reading: what to actually buy if you want sunscreen without synthetic filters and what the research really says about chemical sunscreen filters.
Sources
- Cole C, Shyr T, Ou-Yang H. Metal oxide sunscreens protect skin by absorption, not by reflection or scattering. Photodermatol Photoimmunol Photomed. 2016 — zinc oxide and titanium dioxide absorb ~95% of UV rather than reflecting it
- Matta MK, et al. Effect of Sunscreen Application on Plasma Concentration of Sunscreen Active Ingredients: A Randomized Clinical Trial. JAMA. 2020 — six synthetic UV filters absorbed into plasma above the FDA's safety-data threshold
- Kaur CD, Saraf S. In vitro sun protection factor determination of herbal oils used in cosmetics. Pharmacognosy Res. 2010 — coconut and olive oil measured around SPF 8; other common oils lower
- American Academy of Dermatology — Sunscreen FAQs — SPF 30 blocks ~97% of UVB; reapply every two hours; mineral filters for sensitive skin
