Cetearyl Isononanoate | Cosmetics Info- rượu cetearyl ,The esters of Pelargonic Acid, including Isononyl Isononanoate, Ethylhexyl Isononanoate and Cetearyl Isononanoate are not very soluble in water and do not readily penetrate the skin. The CIR Expert Panel noted that these compounds may increase the dermal penetration of other compounds.