When I first heard about tallow soap I had the same reaction most people do. Beef fat??!! On my skin. Really?
But when your child has had eczema since birth and nothing is working, not the dermatologist-recommended washes, not the fragrance-free everything, not the oat baths and the prescription creams, you start questioning everything you thought you knew about skincare. Including soap. So I researched. And then I made my own. And then I never went back.
Here are the questions I get asked most and the honest answers.
What is tallow soap?
Tallow soap is a natural soap made from rendered animal fat, most commonly beef. It is rich in vitamins A, D, E and K and has a high concentration of fatty acids which help to deeply nourish and moisturize the skin.
At small batch lab we use only grass-fed beef tallow, which means the animal was raised on pasture, not grain. Grass-fed specifically means higher levels of conjugated linoleic acid and fat-soluble vitamins than conventional beef fat. We know exactly what went into the animal and therefore exactly what goes on your skin.
Does tallow soap smell like beef?
No, and this is the question I get most at markets. Our tallow is carefully rendered and filtered to remove any animal smell. In our scented bars the essential oil or fragrance completely masks any residual scent. In our unscented bars like Oatmeal most customers describe it as neutral and clean, not beefy at all.
Why is tallow soap good for sensitive and eczema-prone skin?
Tallow soap is particularly beneficial for dry or sensitive skin types, it can help restore the skin's natural oils while gently cleansing, so many people with conditions like eczema or psoriasis find tallow soap soothing due to its mild non-irritating properties.
The reason comes down to biology. Tallow is biologically similar to your skin's own sebum (the oils your skin naturally produces). Your skin recognizes it. That's why it absorbs without leaving a greasy residue and nourishes without clogging pores. It works with your skin rather than stripping it. Most commercial soaps do the opposite, they contain sulfates and synthetic detergents that strip your skin's natural oils with every wash. For eczema-prone skin where the barrier is already compromised that stripping effect can trigger flare-ups.
Is tallow soap better than plant-based soap?
Neither is universally better, but for sensitive and eczema-prone skin tallow has a meaningful advantage. The fatty acid profile of grass-fed tallow closely mirrors human skin fat in a way that most plant oils simply don't. That biological compatibility is what makes it so gentle on reactive skin. Grass-fed beef tallow is loaded with vitamins A, D, E, K and B which are essential for maintaining healthy skin. When used in soap tallow can help enhance lather and create a silky texture, and unlike many commercial soaps that may contain harsh synthetic ingredients handmade tallow soap can be crafted to avoid allergens and unwanted additives.
What should I look for in a tallow soap?
Three things matter most:
- Grass-fed - the quality of the tallow depends entirely on the quality of the animal. Grass-fed and grass-finished means a cleaner, more nutrient-dense fat.
- Minimal ingredients - the fewer the better for sensitive skin. At small batch lab every bar contains 5 ingredients or less. Nothing your skin doesn't need.
- No other synthetic additives - some additives are huge red flags for eczema flare-ups. Look for essential oil bars, or just pure tallow bars without other oils added.
My son's skin is the reason small batch lab exists. Every formula we make is held to the standard I set for his skin, gentle enough for the most reactive skin, effective enough that we never needed to look for anything else.
If you are new to tallow soap, start with our Organic Colloidal Oatmeal bar. It's fragrance-free with colloidal oats, grass-fed tallow, and water. Three ingredients. Nothing else.
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