Trideceth-12 Goed Reinigingsmiddel No known benefits Trideceth-12 description A synthetic mixture of a fatty alcohol (tridecyl alcohol) and polyethylene glycol that functions as an emulsifier and cleansing agent. Extensive research has shown this and other trideceth-type ingredients to be safe and non-sensitising when used in low amounts typically seen in cosmetic products. Related ingredients: Polyethylene Glycol