THE MECHANISM
A DRY PATCH IS A LEAK
A dry patch is skin losing water faster than it can hold it. Adding water misses the point entirely. The lipid matrix in the stratum corneum, the layer that controls how much water escapes, has failed locally. Transepidermal water loss spikes. Corneocytes dehydrate. The surface flakes.
The visible dryness happens last. By the time you see the patch, the lipid failure has been underway for days.
Every product that adds water to a dry patch is treating the last symptom and ignoring the upstream cause. The water evaporates within minutes. The preservatives stay. The patch returns tomorrow.

water evaporates · petroleum caps · lipids integrate
EMULSIFIER CYCLE
Most moisturisers are 70% water. The water leaves first. What stays behind is a preservative system, a fragrance stack, and a lipid deficit still unaddressed.
THE WASH-OUT EFFECT

100% anhydrous, no water phase
Water-based creams need emulsifiers to hold oil and water together in the bottle. Those emulsifiers keep working on the skin, dissolving the barrier's own lipids in what dermatology calls the wash-out effect. The product designed to fix the dry patch is chemically equipped to extend it.
Then it evaporates. The skin tightens. You reapply. The emulsifiers go back to work. The cycle is the product working as designed.
Petroleum takes the opposite approach and fails differently. It forms an inert occlusive film. Nothing gets out, nothing gets in. The barrier underneath stays exactly as depleted as it was. The patch is capped.
THE LIPID
LAYER
Squalane
A hydrocarbon your skin makes on its own, peaking in your twenties and declining from there. Instead of sitting on the surface, it integrates into the intercellular lipid domains of the stratum corneum and lowers transepidermal water loss from inside the matrix. Lightweight, non-comedogenic, zero residue.
MCT
Medium-chain triglycerides. Caprylic and capric acid, small molecular weight, fast to penetrate. This is the carrier that takes everything else with it. Rather than forming a film, it absorbs into the lipid matrix and carries the active stack along. The speed is a function of molecular size.
Jojoba
A liquid wax ester, closer to human sebum than any other plant oil. The stratum corneum recognises it as its own. It fills the gaps in the lipid matrix that water-based products cannot reach and petroleum cannot enter.
absorbs in ~90 seconds · soft-matte finish
UPSTREAM
CONTACT TIME
There is no water phase to evaporate. It stays in contact for hours. A water cream is gone in fifteen minutes.
A water-based moisturiser's active contact time is the gap between application and evaporation. For most products that is under 15 minutes. After that, the preservatives, the emulsifiers, and whatever fragrance was in the formula sit on a surface that is already drying out again.
NOOKS is 100% anhydrous. Nothing evaporates. The lipids integrate with the barrier and stay functional for hours. That is why a 60g tin lasts 3+ months of daily use. Functional doses in every gram, no filler, no dilution, no evaporation loss.

60g · ~3+ months · no water to leave