Isotearyl Isotearate is a non-toxic skin conditioning ingredient and product emulsifier. It is commonly used in lip care products, such as gloss and balms, and cosmetics like: facial cleansers, eye creams, eye shadow and sunless tanning formulas. In a study published by the International Journal of Cosmetic Science, researchers found that Isotearyl Isotearate was able to protect skin from excessive water loss and aided in increased hydration. The Environmental Working Group rates this ester as having no toxic threat to health or bioaccumualitive affects.