How Does Lanolin Work as a Moisturizer?
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We all know lanolin is a moisture hero, but how does it actually work? Let’s break down the science in simple terms.
Semi-Occlusive Power
Lanolin is what dermatologists call a semi-occlusive moisturizer. That means it forms a thin barrier on your skin that slows down water loss — but unlike heavy-duty occlusives (like petroleum jelly), it still lets skin breathe. Think of it like a raincoat with built-in air vents.
- Petroleum jelly: blocks ~98% of water loss (too much of a seal).
- Lanolin: blocks about 20–30% of water loss, which is enough to keep hydration in while allowing skin’s natural processes to continue.
A Natural “Moisture Reservoir”
Here’s where lanolin goes above and beyond: it can hold 2–4 times its weight in water. That means when you apply it to damp skin (like after washing your face or hands), lanolin soaks up that extra water and feeds it back to your skin over time.
This ability makes it different from waxes and oils that just sit on the surface. Lanolin actually interacts with water molecules — working more like a sponge than a plastic wrap.
Emollient Benefits
Lanolin isn’t just about trapping water. It’s also an emollient, which means it softens and smooths skin by filling in those tiny cracks and gaps in dry, flaky areas. This makes skin feel immediately supple and less tight.
Why Skin Loves It
Here’s the kicker: lanolin’s structure is biologically similar to human sebum (our natural oils). That’s why our skin accepts it so easily — lanolin feels “familiar” to our barrier. No surprise it’s been nicknamed a “winter skin wonder” by dermatologists.
QUILT’s Take
At QUILT, we harness this unique mechanism in The Balm. With ultra-pure lanolin as its hero, The Balm provides the long-lasting hydration your lips and dry patches crave. Learn more about how we chose lanolin on our Why Lanolin page.
FAQ
Does lanolin clog pores?
It can if you’re acne-prone and apply it to oily areas, but for lips, hands, and dry patches, it’s a superstar.
Is lanolin better than petroleum based lip products?
For hydration, yes. petroleum based lip products seals, lanolin seals and hydrates.