They are a nut from the Sapindus mukorossi tree native to India and Nepal. When they get wet they create soap naturally called Saponin. The soap nut shells absorb water and release the saponins which circulate as a natural surfactant in the wash water, freeing dirt, grime, and oils from clothing.
Depending on the size and efficacy of the shells, four to six shells (but possibly more for smaller pieces) will be enough for a full load. Place the soap nuts in a cotton muslin bag and tie securely shut. There will be little to no bubbles during the wash cycle. This doesn’t detract from their ability to clean. Wash water may smell slightly of apple cider vinegar. If fragrance is preferred, organic essential oils can be added to the muslin bag. Soap nuts can be re-used several times before they start to disintegrate. It is time to compost the shells when they start to look mushy and grey.
Each box will contain 1 pound of soap nuts.
one laundry bag to place the nuts in and then in the washer.