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Weigh the waters, glycerine and preservative (optional) and place in another heatproof bowl. If you are using a preservative you will need a small digital scale to accurately measure 1 gram.
Next, stand both bowls in a pan of water and heat, I didn’t want to place the bowls directly on my pan base so I used two small metal tart tins. With hindsight, one larger tin would probably be better (if you have the correct size), but either way be sure that your bowls are standing firmly and stable as the water simmers.Stir your oils & wax gently until it has all melted. If you are using a preservative make sure the water/glycerine/preservative mix temperature does not exceed the recommended level usually around 65C (check the product instructions).
Remove both bowls from the heat and combine them by pouring the water/glycerine mixture into the oil/wax mixture.Stir again for 4 minutes (more if required).
Leave the mixture to stand for a minute then stir again, repeat this until it cools down. If you see any separation place it back on the heat and stir harder until it combines again.Then remove from the heat and try stirring gently again until it cools (repeat this again if it fails). If it continues to separate try adding another 1-2g of emulsifying wax and melt it into the mix.
Once it cools to lukewarm it will thicken, then add your essential oils and continue stirring for a few minutes more or until thoroughly combined.
Place in your bottle or container but wait until completely cool to avoid any condensation.
4 oz PET Plastic Bottle
Your cleanser should keep for 12 months if you've added a preservative.