Laundry Powder

I am very pleased with our homemade laundry powder. I feel like it’s better than the products we were buying before.

Thanks Trash is for Tossers for popularising this simple solution.



  • 2 cups baking soda
  • 1 bar of castile / olive oil based soap


  1. Put 1 cup baking soda in the oven for 1 hour at 200C/400F (mixing halfway). This process turns baking soda into washing soda.
  2. Grate soap with a fine parmesan cheese grater. Break it up with your fingers if the soap is a little too curly.
  3. After one hour, take the washing soda out of the oven and let it cool for 20 minutes.
  4. Combine 1 cup washing soda, 1 cup baking soda and the grated soap into a jar. Mix thoroughly.
  5. Tear up any paper soap wrappers for the compost.

In use

  • One scoop for a load of washing is all I need.