Stearalkonium Hectorite is a creamy white, fine powder. In cosmetics and personal care products, Stearalkonium Hectorite is used in a wide variety of products including lipstick, eye makeup, and nail polish and other manicuring products. Stearalkonium Hectorite functions as a suspending agent.
References
Source: cosmeticsinfo.org/ingredient/stearalkonium-hectorite-0#sthash.d88HlKPP.dpuf