All our batches of natural exfoliants are carefully screened throughout the entire value chain – from the raw material up to the packaged exfoliating powders. Besides, all BioPowder.com personal care ingredients can be supplied both as untreated natural exfoliating beads as was as in an irradiated, i.e. microbiologically decontaminated, form. Different irradiation methods such as accelerated electrons or gamma rays are available upon request.