Simple Lotion with Cetyl Alcohol

A light, properly emulsified body lotion built on a simple percentage formula.

Level
Medium
Method
Emulsify
Makes
100 g
Time
45 min

Your first real emulsion, and the formula that teaches you how lotion actually works.

A lotion is just oil and water persuaded to stay together. Cetyl alcohol is the thickener that gives it body, and the emulsifying wax is what stops the two phases separating again.

This is written as percentages rather than spoons, which is how formulators work. Scale it to whatever batch size you want: for 100 g, one percent is simply one gram.

Method
01

Heat both phases

Warm the oil phase and the water phase separately, each to around 70 degrees C.

02

Combine

Slowly pour the heated water phase into the oil phase, stirring continuously as you go.

03

Blend

Blend with a hand blender until a smooth, uniform emulsion forms.

04

Cool down

Let it cool, then add the preservative and your essential oil.

05

Bottle

Stir well and transfer into a clean container.

Tips and swaps

  • A preservative is not optional in anything containing water. Without it the lotion will grow mould.
  • If the emulsion splits, it usually means the phases were at different temperatures when you combined them.
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Recipe FAQs

Do I really need a preservative?
Yes. Anything containing water will grow mould and bacteria without one, usually within days. This is not optional.
My emulsion split. Why?
Almost always because the oil and water phases were at different temperatures when combined. Both should be around 70 degrees C.
What does the cetyl alcohol actually do?
It is a fatty alcohol that thickens the lotion and gives it body. It is not drying like the alcohol you might be thinking of.

This recipe is shared for general wellness and educational purposes only. It is not medical advice. Always patch test, and speak to a professional if you are pregnant, breastfeeding or have a skin condition.