PEG-75 stearate is an ester mixture of polyethylene glycol and stearic acid. It works to emulsify solvents in cosmetic formulas, can contribute to product texture and, in larger quantities, can also be a cleaning agent. PEG-75 stearate can be animal derived or synthetic. It is one of the many PEG compounds that are considered safe as they are used in cosmetics. https://www.paulaschoice.com/ingredient-dictionary/ingredient-peg-75-stearate.html?q=PEG-75%20Stearate&fdid=ingredients https://denstoredanske.lex.dk/stearinsyre