Water-Based vs. Oil-Based Moisturisers: What's Actually Different

Walk down any skincare aisle and most lotions and creams share something in common that isn't obvious from the label: water is usually the first ingredient, sometimes making up 60-80% of the product. Everything else — oils, emulsifiers, preservatives, fragrance — is blended into that water base. A balm like our Pure Tallow Balm works completely differently: there's no water in it at all.

Water-based moisturisers work by delivering hydration to the skin's surface, generally feeling lighter and absorbing faster, which is part of why they're the default for a lot of everyday products. The tradeoff is that water alone evaporates quickly, so these formulas need an occlusive ingredient (something to seal the water in) and usually a preservative system, since water-based products are far more hospitable to bacterial growth than oil-based ones.

An oil-based balm like tallow skips that mechanism entirely. Instead of adding water, it works by supplementing your skin's own natural oils and helping it retain the moisture it already has, forming a breathable barrier on the surface rather than delivering water directly. That's also why a straight fat-based balm generally doesn't need synthetic preservatives the way a water-containing lotion does — there's no water content for anything to grow in.

Neither approach is universally "better" — very dry climates or very dry skin types often do better with an oil-based approach, while some people prefer the lighter, faster-absorbing feel of a water-based lotion day to day. If you've tried standard lotions and felt like you were reapplying constantly without lasting relief, that's often a sign your skin wants the oil-based approach instead.