PEG-11 cocamide (INCI) is a polyethylene glycol derivative based on coconut amides (= reaction products of the fatty acids in coconut oil with diethanolamides) which is used in cosmetic products. The number 11 after "PEG-" indicates the average number of molecular units -CH2-CH2-O-. PEG-11 cocamide acts as emulsifier and surfactant.