Get excess moisture out of your foods and prevent them from absorbing water in the air with Silica Gel Desiccant packets! Completely food-safe Silica gel will not change or permeate the food it's packed alongside. Keep dehydrated foods mold-free and crunchy items crisp during long-term storage with the Silica Gel from Pastry 1. Great for dehydrated fruits and vegetables, spices, herbs, and much more! What is Silica Gel? Silica Gel is a man-made form of silicon dioxide. Silicon dioxide is a naturally occurring substance found in everything from vegetables to sand, opals, even seashells and makes up 12% of the planet's surface. In short, silicon dioxide can be found everywhere! Silica Gel Desiccant is a dehydrated form and loves to bond with water. This characteristic is what makes it such a great addition to packaged foods. Perfect for controlling moisture, the beads in each package hold up to 40% of their weight in water and will not release it unless heated.