Diethylene Glycol
What is Diethylene Glycol?
Diethylene glycol is a colorless, odorless liquid used historically as a humectant, solvent, and viscosity-decreasing agent in cosmetics and personal care products. It functions by attracting and retaining moisture, aiding in product texture and penetration. However, due to its high toxicity and potential for severe health risks, its use in cosmetics has been heavily restricted or banned in many regions.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Humectant
Attracts and holds water in the stratum corneum, boosting hydration and plumpness; commonly used in moisturizers, cleansers, and hair conditioners.
Solvent
Dissolves and carries other ingredients, helping control viscosity, evaporation rate, and delivery of actives in both water- and oil-based systems.