The practice of massaging the skin with dry powders; frequently recommended following abhyanga or snehana because it is so helpful in removing excess oil from the skin; this practice reduces kapha, increases circulation, bolsters the health of the skin, helps to liquefy fat, and lends strength, stability, and cohesiveness to the tissues of the body.

Source: http://www.banyanbotanicals.com/info/ayurvedic-living/learning-ayurveda/glossary-of-ayurvedic-terms/