How to Make Homemade Laundry Soap (Liquid or Powder ...- how to make washing powder washing soap container liquid detergent ,May 01, 2019·DIY Liquid Laundry Soap Recipe. Homemade Laundry Soap Ingredients (Liquid) 1 bar Fels-Naptha Soap (or Ivory for sensitive skin, Pink Zote, or castile soap) 1/2 cup borax; 1 cup washing soda (NOT baking soda) 5-gallon bucket and lid; How to Make DIY Liquid Laundry Detergent. Start again by grating your bar of soap.