Silica gel is a form of amorphous silica, which is a synthetically difficult form of irregular particles (having a crystal appearance) or irregular beads. The structural content provides a very high surface area (800 square meters per gram). It is this structure that makes silica gel a high performance desiccant. Adhere to the water molecules and the gel surface because of the lower vapor pressure than the surrounding air. When the pressure is equal, the adsorption does not occur any more. The humidity of the surrounding air is higher, the greater the relative humidity), and the stored or transported items are easily damaged. This cosmetic silica gel is a physical adsorption of internal pores in water vapor. There is no chemical reaction, no product or side effects. Even if the saturated steam and silicone products are customized, there is a product with a dry appearance, and the shape does not change. The gel-water sensitive additive is added to the basic silica gel.

Silica gel desiccant is a very inert material that does not normally develop an attack resistance other than strong bases and hydrofluoric acid itself. It is not flammable. This is the most common and easy to use bag in a breathable pouch. These are available in a variety of sizes for a wide range of applications.