Soapnuts contain large quantities of saponin in their shells, which act as a nutural detergent when it comes into contact with water. Without added chemicals, fragrances or dyes soapnut detergent saches are safe and gentle for handwashing delicates and great for regulary laundry requirements. Eaternal Soapnut detergent sachets will leave laundry soft, clean and fragrance free, without having to use fabric softeners.