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Beauty Across Borders Germany × Egypt

The science
of the cream.

A cream is not a mysterious substance. It is a stable emulsion — tiny droplets of one liquid suspended in another. This lab explains how that works, step by step, using the chemistry from our research.

Polar & nonpolarEmulsifiersO/W vs W/OStabilityQuiz
01 — The problem

Oil and water
refuse to mix.

Water molecules are polar: their electrical charge is unevenly distributed. Oil molecules are nonpolar, so they do not naturally mix with water. Pour the two together and they separate into layers.

An emulsifier solves this. It is a molecule with two different parts: one that interacts with water and another that interacts with oil. It stands at the boundary between the two liquids and keeps them together.

In 1911, Eucerit made it possible to produce a stable water-in-oil emulsion — and that became the foundation of the original NIVEA Cream.

02 — The lab

Build an emulsion,
step by step.

Click through the four steps. The beaker shows what happens at each stage.

Interactive diagram · click the steps
Step 1 of 4

Two phases

Water is polar. Oil is nonpolar. Pour them together and they refuse to mix — the oil floats as a separate layer.

03 — Two directions

Oil in water.
Water in oil.

The order of the words matters. In an O/W emulsion, oil droplets are dispersed in a continuous water phase. In a W/O emulsion, water droplets are dispersed in oil. The original NIVEA Creme was W/O.

Continuous phase: water Dispersed phase: oil
04 — Why stability matters

A cream must
survive the journey.

If the phases separate during storage, texture and performance change. Stability is what lets a cream be manufactured, shipped and kept.

Without an emulsifier

Oil and water separate into two layers. The product no longer has the intended texture.

Unstable

With an emulsifier

Droplets form and stay dispersed. The emulsifier coats each droplet and slows re-coalescence.

Dispersed

Stable over time

Eucerit made a water-in-oil emulsion stable enough to produce and store — the 1911 breakthrough.

Stable

Note: real formulation science involves more than one emulsifier, thickeners, preservatives and stability testing. This page explains the core principle, not a manufacturing recipe.

05 — Test yourself

The chemistry
check.

Eight questions drawn from our research. Every answer comes with an explanation.