Solaray, Bamboo Stem Extract, 300 mg, 60 VegCapsDietary Supplement Guaranteed Potency Green Screened 70% Organic Silica Discussion: Bamboo is consumed in Asia, where it is known for its healthful properties. The abundance of silica in bamboo causes a silica gel to form in the hollow stem of the plant. This gel is called tabashir. Solaray Bamboo Extract is standardized for organic silica and is intended to provide nutritive support for healthy connective tissue, bones, hair, skin and nails.