First, sterilise all equipment and utensils by spritzing with the alcohol based sanitising spray. Do not use wooden utensils.
Measure out all ingredients for the oil phase, and add to the first pyrex jug.
Measure out all ingredients for the water phase, and add to the second pyrex jug.
Rest both pyrex jugs in a saucepan/fry pan, then add boiling water to the saucepan until it reaches past the height of the ingredients in the jugs.
Use the candy thermometer to bring the temperature in the jug containing the oil phase ingredients up to 65-70˚C (149-158˚F). Any higher, and you risk oxidising the oils. Stir gently till all ingredients are totally dissolved.
Once you reach 65-70˚C, remove both jugs from heat and place on a board. Gradually pour the water into the oil's jug, and blend on slow with the immersion blender until the mixture emulsifies (30 seconds to 1 minute).
Stop and let the mixture cool and thicken for a minute or two, then blend again until whipped into a creamy texture.
Use the thermometer again to measure the temperature - cool it down to 45˚C (113˚F), this could take up to 15 minutes. Then add the Microcare DB and essential oils. Blend once more to combine.
Let cool entirely, then spoon into 100ml amber glass jars. Label with the date and ingredients. Enjoy!