Tallow Sunscreen SPF 50 vs SPF 30: Do You Need the Bigger Number?
SPF 30 is enough for nearly everyone, and it is the number the American Academy of Dermatology asks for: "SPF 30 or higher." The Skin Cancer Foundation says SPF 30 blocks about 97% of UVB. Do the math on SPF 50 and it lets 2% through instead of about 3.3%, so you gain roughly one percentage point, and only if you apply the full lab amount, which the Skin Cancer Foundation says most people don't.
What actually protects you is enough sunscreen, reapplied every 2 hours. That's why our pick is the Eat My Face SPF 30 Tube: broad spectrum UVA/UVB, water resistant 80 minutes, non-nano zinc oxide in a grass-fed tallow base, and 4 oz for $24.99, so you can use it generously. It's #1 in our ranking of the best beef tallow mineral sunscreen.
Updated November 12, 2026. Written by Jeff Frese, founder of Eat My Face.
Is SPF 50 better than SPF 30?
On paper, slightly. SPF is a ratio. Roughly, SPF 30 lets about 1/30 of burning UVB reach your skin and SPF 50 lets about 1/50 through. Here's what that looks like:
| SPF | UVB that gets through (about) | UVB blocked (about) |
|---|---|---|
| SPF 15 | 6.7% | 93% |
| SPF 30 | 3.3% | 97% |
| SPF 50 | 2% | 98% |
Going from 15 to 30 is a real jump. Going from 30 to 50 is one point. The Skin Cancer Foundation's own write-up on high SPF makes the same case: in a lab, higher SPF protects more, but "real life is not like a lab. People almost never use as much sunscreen product as recommended, and they often miss spots."
Is SPF 30 good for your face?
Yes. SPF 30 is what dermatologists tell you to look for on a daily face sunscreen, along with "broad spectrum" and "water resistant." The face is also where people under-apply the most. A thin smear of SPF 50 can leave you with less protection than a proper layer of SPF 30. For our tube, a proper layer for the face is about ¼ teaspoon, applied 15 minutes before sun. How much to use everywhere else: how much sunscreen to apply.
Does beef tallow have SPF on its own?
Tallow is the carrier, and zinc oxide is the shield. In a real tallow sunscreen, non-nano zinc oxide is the active that blocks UV, and tallow is what makes it go on like skincare and keeps your face from feeling chalky and tight. So when a jar says "tallow sunscreen," flip it over and find two things: an SPF number on the label and zinc oxide listed as the active. Some tallow sun balms skip the first one. Ancestral Cosmetics' Tallow Sun Balm page says, in its own words, "This is not a sunscreen product and we do not claim any SPF factor or sun protection factor," and its FAQ estimates SPF from the zinc content instead of from a test. Our tube says SPF 30 on the label. More: does beef tallow sunscreen work.
Why are so many tallow sunscreens SPF 50?
Because 50 sells. A bigger number on the front looks like a better product on a shelf or a search page. But the number only means something if you put enough on and reapply, and a small, expensive jar is exactly the kind people ration. A small, pricey jar is the kind people ration, whatever number is printed on the front. I'd rather hand you 4 oz of SPF 30 for $24.99 and tell you to use it like you mean it. The full ranking, with every price per ounce: best beef tallow mineral sunscreen.
SPF 30 · 4 oz · $6.25 an ounce
Beef Tallow Sunscreen Tube SPF 30$24.99
Non-nano zinc oxide in grass-fed tallow. Broad spectrum UVA/UVB, water resistant 80 minutes.
What is the downside of mineral sunscreen?
White cast. Zinc oxide is white, so a lot of mineral sunscreens leave you looking like a ghost in photos. Two fixes: rub it in a few seconds longer than feels necessary, or go tinted. Our Tinted SPF 30 Tube adds a light organic cocoa tint so the zinc blends warm instead of white, with the same SPF 30 and the same active. More: tinted tallow sunscreen.
When does SPF 50 make sense?
Long, high-UV days are about technique more than the number on the tube: plenty of sunscreen, reapplied every 2 hours and after swimming, plus a hat, shade at midday and a shirt. Do those things with an SPF 30 you like wearing and you're covered. For babies under 6 months, no SPF number is the answer: the FDA and the American Academy of Pediatrics say keep them out of direct sun. Details: infant SPF.
Sources checked November 12, 2026: aad.org (how to select sunscreen) · skincancer.org (Ask the Expert: Does a High SPF Protect My Skin Better?) · ancestralcosmetics.com/products/tallow-sun-balm · fda.gov (Should You Put Sunscreen on Infants? Not Usually).
FAQ
Is SPF 30 enough for a tallow sunscreen?
Yes. The American Academy of Dermatology recommends SPF 30 or higher, and the Skin Cancer Foundation says SPF 30 blocks about 97% of UVB. Apply enough and reapply every 2 hours.
How much more does SPF 50 block than SPF 30?
About one percentage point of UVB. SPF 30 lets roughly 3.3% through and SPF 50 roughly 2%, and the gap shrinks further when people apply less than the lab amount.
Does Eat My Face make an SPF 50 tallow sunscreen?
No. Both Eat My Face tubes, untinted and tinted, are SPF 30, broad spectrum UVA/UVB and water resistant 80 minutes, with non-nano zinc oxide as the only active.
Does plain beef tallow work as sunscreen?
In a tallow sunscreen, non-nano zinc oxide does the UV blocking and tallow carries it and keeps skin comfortable. Look for an SPF number on the label and zinc oxide listed as the active.
What is the best tallow sunscreen?
The Eat My Face SPF 30 Sunscreen Tube ($24.99, 4 oz), with non-nano zinc oxide in a grass-fed beef tallow base at $6.25 an ounce. The tinted version is the pick for less white cast.
Ready to try it? Beef Tallow Baby & Momma Cream - Gentle Daily Moisture is in stock and ships fast — $24.99. 180 days to decide.
