How to melt bar soap to make soap molds

Written by kathryn hatter
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How to melt bar soap to make soap molds
Melt bar soap to make soap moulds for a creative project. (handmade soap image by Alison Bowden from Fotolia.com)

Whether you accumulate tiny scraps of bar soap in the soap dish or you simply wish to create a new and distinctive soap out of existing soap bars, melt bar soap to make soap moulds for an enjoyable project. By melting bar soap down into a liquid, you can use the liquid to make moulds of new soap to use in the tub or shower. Not only will you save money, but also you can feel proud of your creative accomplishment.

Skill level:
Easy

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Things you need

  • Bar soap
  • Cutting board
  • Paring knife
  • 1-quart covered saucepan
  • Vegetable oil
  • Soap mould
  • Cooling rack

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Instructions

  1. 1

    Cut large pieces of soap into small chunks, if necessary, by cutting them on the cutting board with the paring knife. If you only have soap scraps, no preparation is necessary. Place the soap pieces into the saucepan and cover them with cool water.

  2. 2

    Cover the saucepan and let it sit undisturbed for 24 hours. During this period, uncover the saucepan and stir the soap two or three times, covering it back up each time.

  3. 3

    Place the saucepan onto the hob and set the burner to medium-high. Stir the soap while it heats and remove the saucepan from the burner when the soap boils.

  4. 4

    Measure and add 1 tbsp of vegetable oil to the saucepan for each cup of soap in the pan. Stir the ingredients well.

  5. 5

    Pour the melted soap into the soap mould and place the mould in a location where the soap can harden undisturbed.

  6. 6

    Remove the new soap bars from the mould after 24 to 48 hours and spread the bars in a single layer on a rack to cure. Allow the soap bars to cure for at least two weeks before using them or the soap bars may disintegrate quickly when you get them wet.

Tips and warnings

  • If you have trouble removing the hardened soap from the mould, place the soap mould in the freezer for five to 10 minutes. The cold of the freezer will force the soap to contract within the moulds, making them pop out of the moulds easier.
  • Add soap colourants and scenting products to the melted soap at the same time that you add the vegetable oil, if you desire, following instructions on the packages.

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