Guar Gum - WillPowder from Chef Will Goldfarb, 1lb Willpowder Sale! from 2450 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Prehydrated Guar Gum allows for dosages as little as .1% up to 1% (1 to 10 grams per kilo of formula) to provide viscosity with limited agitation. This makes Guar especially useful in dry mixes.BULK ORDERS: For orders over 30 units please call us to place order.