Tallow is not a modern skincare ingredient. It's one of the oldest — used on skin for as long as people have rendered fat — and its recent return to skincare has been noisy. Some of the claims made for it are overstated. But there's a real reason it appears in most Oath Co balms, and it has nothing to do with trend.
Tallow is rendered beef fat. The tallow we use is responsibly sourced and grass-fed. What makes it interesting for skin is its lipid profile: it's rich in the same fatty acids — oleic, stearic, and palmitic — that occur naturally in human sebum and the skin's own barrier. That structural familiarity is why tallow feels so compatible on skin, absorbing and settling without the heavy, sitting-on-top feel of some occlusives.
We use it in our balms, not our oils. The balm is where a firm, skin-compatible lipid earns its place — it gives structure, comfort, and lasting protection over dry or exposed areas. Our oils are built entirely from plant sources and are fully vegan; the balms are where tallow does work the plant oils alone don't.
Being honest about this matters. Tallow is animal-derived, which means most of our balms are not vegan. We'd rather say that plainly than bury it. If you prefer to avoid animal-derived ingredients entirely, our oils are the place to look — and one balm, Arc, is made without tallow.
Arc is the exception by design. For the changing skin of pregnancy and postpartum, we chose a lighter balm built around shea butter and botanical oils instead of tallow — a texture better suited to that stage. It's a good illustration of the wider principle: no ingredient is in an Oath Co formula by default.
That's the whole test. Not whether an ingredient sounds natural, or photographs well, or trends — but whether it does something the formula genuinely needs. Grass-fed tallow, in the right balm, does.
