Walnut Shell Powder is prepared by controlled grinding of the shells of walnuts. Use this fine grain exfoliant in your soaps and scrubs to provide a gentle exfoliation that will leave skin soft and smooth. Use it soaps, face scrubs and body scrubs. Fine light-brown powder, characteristic odor. Insoluble in water. Add to base, amount as desired. Smaller amounts will provide color variations in products. Larger amounts will provide exfoliation. When using in soaps & washes, we recommend the suspension bases which prevent additives from sinking to the bottom of the container. Can be added to formulas as is, typical final concentration 1 - 50%. For external use only.