- Weigh all Stage 1 (fat stage) ingredients into a stainless steel bowl and place into a saucepan of boiling water (double boiler/bain marie). Bring up to a temperature of over 75 °C.
- When Stage 1 is over 75 °C, add the Stage 2 (water stage) ingredients to a larger stainless steel bowl. Swap the bowls over, so the larger bowl is in the double boiler.
- Pour the Stage 1 ingredients into the Stage 2 and stir gently without creating air bubbles. Ensure the temperature stays above 75 °C and stir continually for 5 minutes.
- After 5 minutes, remove the bowl from the double boiler and put into a pan of cold water to cool it down quickly. Keep stirring all the time.
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When the lotion is under 40 °C add the remaining Stage 3 (heat sensitive) ingredients. Combine thoroughly, jar and label.