Tallow has no meaningful SPF. No fat does. A tallow balm will not stop you from burning, and any product sold as a "tallow sunscreen" is either carrying a mineral filter doing all the work, or it's a guess with a number on it. If you're outside, you need a real sunscreen, and the balm goes underneath it or waits until dark.
I sell tallow balm for a living and I'm telling you to buy a separate product for this. That's not modesty, it's the only defensible answer. Sun protection is the one place in skincare where the wrong call shows up permanently. A fat that makes your face look great in November is not the tool for a June afternoon.
What tallow is good for around the sun is everything before and after: a thin layer of Bare Silk Unscented ($34) under your sunscreen in the morning, and a pea on cool, damp skin at the end of a long day outdoors. Here's the whole picture.
Does tallow have SPF?
Not in any useful sense. You'll find numbers floating around the internet for various oils, usually somewhere between SPF 2 and SPF 8, and a few blogs assign tallow a figure in that range. Two problems with those numbers.
The first is where they come from. Most quoted oil SPF values are lab-dish measurements, where a film of oil is spread on a plate and UV transmission is read through it. That is not the standardized human test a real sunscreen has to pass, which measures the UV exposure it takes to burn skin with and without the product at a defined application amount. The two methods don't produce comparable numbers. When researchers measured the plant oils the internet promotes on actual skin, they came in at SPF 1.2 to 2.8. That is not sun protection.
The second problem is that even if the numbers were right, they'd be useless. An SPF of 4 still lets about a quarter of the UVB through, and it says nothing at all about UVA, which is the range that drives the look of aging and doesn't announce itself with a burn. Dermatology guidance lands on broad spectrum, SPF 30 or higher, water-resistant, for good reason. There is no version of "tallow gets you partway" that translates into a real afternoon.
And there's a specific risk in "partway" thinking: a product that makes you feel protected without actually protecting you keeps you outside longer than bare skin would. That's the worst of both.
What counts as a sunscreen, legally
In the United States, sunscreen is not a cosmetic. It's an over-the-counter drug, regulated under a monograph that specifies which active filters are allowed, at what concentrations, and how the product has to be tested and labeled. An SPF number on a label is a regulated claim backed by a standardized test on human subjects, not a marketing figure a brand picks.
That's why you won't see an SPF number on a tallow balm from a brand that knows the rules. What separates a cosmetic from a drug is intended use, read from the label, the advertising and the website copy, so printing a sun protection claim would make the jar a drug, with everything that follows: a monograph-compliant active, testing, and a Drug Facts panel. A balm with a botanical in it is a cosmetic. It moisturizes and it makes skin look better. It doesn't carry a filter, and it can't claim one.
| Tallow balm | Mineral sunscreen | |
|---|---|---|
| What it is, legally | A cosmetic | An over-the-counter drug (US) |
| Blocks UV | No | Yes, zinc oxide and titanium dioxide scatter and absorb it |
| Carries an SPF number | No, and shouldn't | Yes, from a standardized test |
| Job | Slows water loss and helps repair the moisture barrier | Keeps UV off your skin for a couple of hours |
| Reapply | Morning and night, as you like | Every two hours outside, and after swimming or sweating |
| When to use it | Under sunscreen in the morning, alone at night | Every morning you'll be outdoors, over the balm |
About those homemade tallow sunscreen recipes
Search "tallow sunscreen recipe" and you'll find dozens of versions of the same thing: melt tallow with a carrier oil, stir in non-nano zinc oxide powder at 20 to 25% by weight, pour, and call it SPF 30. I understand the appeal, and I'd still tell you not to rely on it. Three reasons, all mechanical.
Dispersion. Zinc oxide is a powder that wants to clump and settle. Getting it evenly suspended through a fat that's cooling and thickening takes shear you don't have in a kitchen, and any zinc that settles to the bottom of the jar or clumps in the balm is zinc that isn't on your skin. An uneven film is an uneven SPF, and you can't see the gaps.
Film thickness. The tested SPF of any sunscreen assumes a specific, generous layer. A dense balm spreads thin and drags, which means most people apply far less than the test amount, and the protection falls off faster than proportionally.
No way to check. A commercial mineral sunscreen has been tested as a finished product. Your jar has been tested by nobody. There's no home method to verify what you made, and the failure mode is a burn on a kid's shoulders.
If you love making things, make the balm. How to make tallow balm at home is the recipe by weight, and it's a project where a mistake costs you an afternoon instead of a sunburn.
How I use tallow around the sun
Two rituals, morning and night, and the sunscreen is its own step in the middle.
Morning. Cleanse, pat until you're still slightly damp, press in a thin layer of balm (half a pea for a face, less than you'd use at night), give it a minute to settle, then apply your sunscreen on top at the full amount. The balm goes under, never over, because the sunscreen has to be the outermost film to do its job. If a mineral formula goes on chalky, a thin balm layer underneath helps it lay down more evenly.
Through the day. Reapply the sunscreen, not the balm. Every two hours outdoors, and after swimming, toweling off or a heavy sweat. Putting more balm over a sunscreen film is the one move that actively works against you: you're diluting and disturbing the layer that's protecting you.
Night. This is where tallow belongs. A pea on damp skin after you've washed the day off, and if you were outside a long time, a slightly heavier layer as an overnight seal. Slugging with tallow is the method.
Tallow after sun, and what it can do for a burn
People search "is beef tallow good for sunburn" a lot, so here's a careful answer. A balm can make sun-stressed skin feel and look more comfortable. It doesn't undo a burn, and it isn't the right first move on skin that's still hot.
What I'd do, in order:
- Cool it down first. A cool shower or a cool damp cloth, for as long as it takes for the skin to stop radiating heat. Putting an occlusive on hot skin traps that heat, which is the opposite of comfortable.
- Rehydrate. Drink water. A bad burn pulls fluid to the surface and you'll feel it.
- Balm on damp, cool, unbroken skin. A pea of the plainest jar you own, pressed not rubbed. Damp is the part people skip, and it's the same instruction dermatologists give for dry skin generally, moisturize while the skin is still damp. It slows the water loss from a barrier that's had a rough day and takes the tight, papery feeling down.
- Nothing scented. No essential oils, no botanicals, no fragrance on sun-stressed skin. This is the one time I'd insist on the unscented jar even if you normally like the scented ones.
- Know when it isn't a skincare question. Blistering, a burn over a large area, chills, fever, nausea or a burn on a small child is a call to a provider, not a jar. It's cosmetic care, not a treatment. Your provider's plan comes first.
Peeling skin a few days later is the same story: keep it moisturized so it looks less papery, don't pull at it, and give it a couple of weeks. The complete guide to beef tallow for skin covers what a barrier seal does and doesn't do generally.
What to look for in a mineral sunscreen
Since I'm sending you to buy one, here's the short spec. Zinc oxide as the active, alone or with titanium dioxide; zinc gives you the widest single-filter coverage across UVA and UVB. Broad spectrum on the label, which is a tested claim in the US, not a descriptor. SPF 30 or higher, and water-resistant, which is the bar dermatologists set. And, less obviously, a texture you'll reapply, because the best sunscreen is the one you put on again at two o'clock. A perfect SPF 50 that you hate wearing protects you less than a decent SPF 30 you'll top up.
If mineral formulas look too white on your skin, a tinted one usually solves it, and the thin balm layer underneath helps with the drag.
Which jar for a life outdoors
Under sunscreen in the morning and on a cool face at night: Bare Silk Unscented ($34), five ingredients, no essential oils, the jar I'd hand anyone who spends time outside. For skin that flushes and stays warm after a windy or bright day: Moonlight Calm ($69), as the last step of the night, once the skin is cool. For the look of sun-worn hands, forearms and the backs of the ears: Recovery Balm ($74), our densest jar. The whole line is in the balm collection, and the quiz at find your balm sorts it in two minutes.
If you take one thing from this: buy a broad-spectrum mineral sunscreen at SPF 30 or above, and start with Bare Silk Unscented ($34) underneath it. Sixty days on your skin; if it disagrees, we refund it.
Questions we hear
Does tallow have SPF?
No. Tallow has no meaningful sun protection factor, and neither does any other fat or plant oil. The numbers quoted online come from lab-dish tests rather than the standardized human test a sunscreen has to pass, and when plant oils were measured on skin they landed at SPF 1.2 to 2.8, far below the SPF 30 dermatologists recommend.
Can I put tallow on a sunburn?
Once the skin is cool and unbroken, yes, for comfort. Cool the burn down first with a cool shower or cloth, then press a pea of an unscented balm onto damp skin. Skip anything with essential oils. Blisters, a large burn, chills or a burn on a small child means see a provider instead.
Can I use tallow under sunscreen?
Yes, and that's the right order. A thin layer of balm on damp skin, a minute to settle, then sunscreen at the full amount over the top. Never the other way around: the sunscreen has to be the outermost layer, and reapplying balm over it disturbs the film that's doing the work.
Does beef tallow count as sunscreen?
No. In the United States a sunscreen is an over-the-counter drug, and an FDA monograph sets which active ingredients it may use. Its SPF comes from a test of how much UV it takes to burn skin with the product and without it. Plain beef tallow carries no UV filter and has never been through that test, so it's a moisturizer. Outdoors, you'll want a broad-spectrum sunscreen at SPF 30 or higher over the balm.
Is there a tallow zinc sunscreen that works?
Some products pair tallow with zinc oxide, and in those the zinc is the UV filter and the fat is the carrier. If one carries a tested SPF number and a Drug Facts panel, it's a sunscreen with a tallow base. A home blend of tallow and zinc powder has no SPF number anyone measured, so don't trust it with a day outside. Buy a tested mineral sunscreen, and save the balm for underneath it or for after dark.
What about tallow after sun, the next day?
That's a good use. Once skin is cool, a pea on damp skin morning and night keeps a stressed barrier from drying out further and makes peeling skin look less papery. Keep it unscented until the redness is fully gone.
What is the best tallow sunscreen?
There isn't a tested one we know of, so I won't rank any. What I'd buy is a broad-spectrum mineral sunscreen at SPF 30 or higher, with zinc oxide as the active. Wear it for the hours you're outside, and use a plain tallow balm at night on cool skin. The sunscreen keeps UV off your skin. The balm takes the dry, tight feel out of a long day outdoors.
Why don't we make a tallow sunscreen or publish a tallow sunscreen recipe?
An SPF number is a drug claim in the US. It's backed by a standardized SPF test on people and printed on a Drug Facts panel. We make cosmetics, and we don't do that testing. A recipe would be worse, because nobody can measure the SPF of zinc stirred into fat in a home kitchen. Printing one would send readers into the sun trusting a number no one checked. Zinc oxide does its job in a sunscreen that's been tested, and that's where we'd point you.
Go deeper
Beef tallow for skin: the complete guide is the long version of what this fat does and doesn't do. Tallow for sensitive skin is the five-ingredient case for keeping stressed skin plain, slugging with tallow is the overnight seal, tallow for rosacea-prone skin covers heat and sun as triggers, and tallow for wrinkles is where to go once you've got the sunscreen sorted, since that's the step that matters most for the look of aging. Craft Tallow vs Sky and Sol compares our balm with a mineral sunscreen company that also sells tallow creams, and says plainly which jobs each one does. The sun set, all live now: is sunscreen bad for you answers the no-sunscreen posts with the trials, mineral vs chemical sunscreen and zinc oxide vs titanium dioxide sort the filters, the sunscreen ingredients people are told to avoid reads the tests, vitamin D and sunscreen covers the deficiency worry, tallow and zinc sunscreen is the order of operations, and tallow and sunburn is the after-sun read.
Sources
- U.S. Food and Drug Administration. Sunscreen: How to Help Protect Your Skin from the Sun. FDA.
- Acsova A et al. (2021). The real UVB photoprotective efficacy of vegetable oils: in vitro and in vivo studies. Photochemical and Photobiological Sciences.
- American Academy of Dermatology Association. How to select a sunscreen. AAD.
- U.S. Food and Drug Administration. Is It a Cosmetic, a Drug, or Both? (Or Is It Soap?). FDA.
- American Academy of Dermatology Association. Dermatologists' top tips for relieving dry skin. AAD.
Brian is the founder of Craft Tallow, a small-batch tallow skincare line shipped from Cottonwood Heights, Utah, built on 100% grass-fed suet. Questions? Reply to any email from us; it lands with him.