DIY Sustainability Upcycling

Make Laundry Detergent From Soap Bar Scraps

Make laundry soap from bar soap scrapsWhen a bar of soap gets worn down and is near the end of its usefulness, it’s considerably less appealing than when it was new. The scent has faded, it’s brittle or soggy – time to throw it out, right? Do you have some soap bars you don’t like? Do you have a collection of little motel soaps that you don’t know what to do with? You could throw these soaps out, but I prefer to save up my soap scraps and make them into laundry soap. It’s fun to do and probably uses supplies and equipment that you already have on hand or can obtain for little cost.

What You’ll Need
* = available at Schnarr’s
Small bucket with lid*
Stick blender
Cutting board*
Soap bar scraps
Measuring cups*


  1. Put one cup dry Borax into the bucket.
  2. Cut up soaps and add 2 cups soap pieces to the bucket.
  3. Add 6 cups of water.
  4. Blend all well with the stick blender. If you have more soap pieces and room in the bucket, add more ingredients in the same proportions until your bucket is about 2/3 full. After blending well, let the mixture sit for awhile and see if the liquid thickens. If so add more water until it’s roughly the consistency of liquid laundry detergent.
  5. Use 1 cup of the new mixture per load of laundry.