The Bamboo Exfoliating Extract is obtained from the bamboo tabashi stems collected in the form of an exudate (a thick liquid) which crystallizes at room temperature. This crystalline powder is very rich in mineral salt and is an excellent source of silica. This powder makes a mild exfoliant. It is ground to 160 microns for a light gritty feel. Suggested usage in soap, lotions or bath gels is 5% to 8% weight (but you can always use less or more as desired).We use bamboo micro-fibers to gently remove dead skin without irritating your skin.