The natural soap found in these berries is called saponin. Saponin is a natural cleane.All Soap Nuts by Eco Nuts are wild-harvested, meaning they are gathered from wild trees grown without any kind of chemicals, fertilizers, or pesticides. Saponin actually tastes bad to insects so no pesticides

Soap Nuts are actually a berry fruit related to the lychee and are not nuts at all. They are completely nut allergy safe and have been used successfully with no reactions by people with nut allergies.While Soap Nuts have been a terrific solution for many customers with skin allergies and other conditions, people who have many allergies or compromised immune systems should always take proper precautions and first wash one small item in a small container or sink OR do a patch test before washing an entire load in the washing machine.