Methyl Gluceth-20 Good Humectant Hydration Methyl Gluceth-20 at a glance Functions as a moisturising and conditioning ingredient According to its manufacturer, it has a low irritation potential Made by combining polyethylene glycol with glucose (sugar) Ruled safe as used in cosmetics Methyl Gluceth-20 description Methyl gluceth-20 is made by combining polyethylene glycol with glucose to create a new compound. In cosmetics, it functions as a humectant and conditioning ingredient. According to its manufacturer, methyl gluceth-20’s (also known by its trade name, Glucam ™ E-20) low irritation potential makes it ideal for sensitive skin formulations. The independent Cosmetic Ingredient Review panel has found methyl gluceth-20 safe as used in cosmetics, where concentrations range from 4–15%, with rinse-off products typically containing greater amounts.