How to Make Homemade Glycerin Soap

Beautiful soaps are easy to make with a melt-and-pour technique—just add food coloring and mold using recycled milk cartons.

Homemade Glycerin Soap

Learn how to make soap using glycerin. Glycerin is usually sold in large blocks at crafts stores; to melt it, cut it into small cubes that will fit in a microwavable bowl or measuring cup. You can also make multiple mini soaps by using ice-cube trays as your molds.

What You'll Need


  • Clear Glycerin Soap
  • Food coloring
  • Bench Scraper
  • Coffee stirrers
  • Clean milk or juice carton
  • Petroleum jelly


  1. Heat the glycerin in a microwave on high, stirring at 15-second intervals, until it's completely melted.

  2. Mix liquid food coloring into a bowl with a coffee stirrer. (Note: Food coloring is very strong, so use it sparingly.)

  3. Coat the inside of the milk carton with petroleum jelly. Pour in melted glycerin; let cool completely—about two hours.

  4. Tear away carton, and, using a bench scraper, slice block into individual bars.

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