The Myrj range of nonionic surface active agents is produced by the polyethoxylation of high quality fatty acids. They are effective O/W emulsifiers suitable for use in medicated creams and lotions, even in the presence of electrolytes. They are hydrophilic, water soluble surfactants that display inverse aqueous solubility characteristics with increasing temperature. They are also stable in the presence of moderately strong acids, alkalis and electrolytes. Myrj S25/1 is used in emulsification of mild anti-perspirants and deodorants. Recommended topical usage levels of 0.5-5%.