Cold process soap-making is an artisan technique used for centuries. Here we answer the most common questions about cold process tallow soap and why this method is so special.
What Is Cold Process Soap?
Cold process soap is made by mixing oils and fats with lye (sodium hydroxide) at a relatively low temperature. Unlike hot process soap, where the mixture is heated, cold process lets the chemical reaction (saponification) occur naturally at room temperature. This process takes 4–6 weeks and is called curing.
Why Does Cold Process Soap Take So Long to Make?
After pouring, cold process soap must cure for 4–6 weeks. During this time, excess moisture evaporates, the soap hardens, and saponification completes fully. This results in a milder, longer-lasting soap with better lather quality. Patience pays off — the wait produces a superior final product.
Is There Still Lye in the Soap After Making?
No. When soap is correctly made and fully cured, no lye remains. During saponification, the lye reacts completely with the fats and is converted into soap and glycerin. This is why the curing period is so important — it guarantees all lye has reacted and the soap is safe to use.
Why Use Tallow Instead of Plant Oils?
Tallow has unique advantages for soap-making:
- Hard, long-lasting soap: Tallow creates a firm bar that does not dissolve quickly
- Creamy lather: Produces a luxurious, creamy foam
- Skin-friendly: Its fatty acid profile resembles human sebum, making it mild and nourishing
- Rich in vitamins: Grass-fed tallow contains natural vitamins A, D, E and K
- Sustainable: Uses a by-product that would otherwise go to waste
Does Cold Process Soap Contain Glycerin?
Yes! One of the great advantages of cold process soap is that all naturally formed glycerin stays in the bar. Glycerin is a natural by-product of saponification and an excellent moisturiser. Commercial soaps often extract glycerin to sell separately, but handmade cold process soap retains this valuable ingredient.
Is Cold Process Soap Better Than Commercial Soap?
Cold process soap has several advantages over commercial soap: it contains natural glycerin for hydration, no harsh detergents or synthetic ingredients, milder cleansing that respects the natural skin barrier, is crafted with high-quality ingredients, and contains no unnecessary additives, colourants, or synthetic fragrances. Many people with sensitive skin, eczema, or dry skin notice a significant difference when switching to cold process soap.
Why Is My Tallow Soap White or Cream Coloured?
The natural colour of tallow soap ranges from white to cream, depending on the quality and source of the tallow. Grass-fed tallow often has a slight yellowish tint from beta-carotene and other natural pigments — a sign of quality. We add no artificial colourants, so the colour you see is 100% natural.
Can I Use Cold Process Tallow Soap on My Face?
Absolutely. Tallow soap is gentle enough for facial use. Because tallow resembles human sebum, it is well-tolerated by most skin types, including sensitive skin. The gentle cleansing removes dirt and excess oil without drying out the skin. Many people use our fragrance-free tallow soap daily for both face and body.
How Should I Store My Cold Process Soap?
To make your soap last as long as possible: store on a well-ventilated soap dish that allows water to drain, let the soap dry between uses, store unused soaps in a cool, dry place, and avoid direct sunlight and moisture. A well-cared-for cold process soap can last for months.
Why Does Natural Soap Lather Less Than Commercial Soap?
Commercial soaps often contain synthetic foaming agents (sulfates) that produce lots of foam but can irritate the skin. Cold process soap creates a natural, creamy lather that cleanses effectively without harsh chemicals. Less foam does not mean less cleansing — it simply means a milder, more natural experience.
Is Cold Process Soap Suitable for All Skin Types?
Yes! Cold process tallow soap is especially versatile: for dry skin it provides natural glycerin and nourishing fats; for sensitive skin it is mild and free of irritants; for oily skin it cleanses without stripping, which can reduce overproduction of sebum; for normal skin it maintains natural balance; and for skin with eczema or psoriasis it is gentle and non-irritating.
Why Choose Fragrance-Free Soap?
Our minimalist tallow soap is fragrance-free because: there is no risk of allergic reactions from fragrances or essential oils, it is perfect for sensitive skin and people with fragrance allergies, it is suitable for babies and children, it showcases the natural mild scent of tallow, and it is pure without unnecessary additives. For those who value simplicity and purity, fragrance-free soap is the perfect choice.
Frequently Asked Questions Summary
What makes cold process tallow soap different from regular bar soap?
Cold process tallow soap retains natural glycerin, vitamins A/D/E/K, and uses no synthetic detergents. The 4–6 week curing produces a harder, milder bar than commercial soap that contains all the skin-nourishing fatty acids from grass-fed tallow.
Is Nana Latta tallow soap tested on animals?
No. All Nana Latta products comply with EU cosmetics regulations, which prohibit animal testing. Our tallow is ethically sourced as a by-product of the Belgian food industry.
Can I use tallow soap if I have very sensitive or allergy-prone skin?
Yes — fragrance-free tallow soap is one of the most hypoallergenic bar soaps available. With no synthetic fragrances, dyes, or preservatives, it is specifically recommended for eczema, rosacea, and allergy-prone skin.
Conclusion
Cold process tallow soap combines traditional craftsmanship with modern knowledge of skincare. The result is a pure, nourishing soap that cleanses and cares for your skin the way nature intended. Have more questions? Feel free to contact us!
