ecozones naturally & sustainably sourced soap nuts are an organic, allergy-friendly, economical and effective alternative to the common laundry detergent. the 300g organic cotton bag holds enough soap nuts for 100 washes. each dose of nuts is also re-usable for up to 4 times.gentle on your skin & clothes, while ensuring colours stay brighter for longer. additional key attributes completely organic, hypoallergenic, biodegradable little note soap nuts have been used for thousands of years as a natural washing detergent. also known as soap berries the soap nuts grow on trees of the sapindus genus and are a source of saponin, a natural soap which cleans and freshens your clothes.