PEG-32

PEG-32 is a low–molecular weight polyethylene glycol used mainly as a humectant/solvent and slip agent, typically at low-to-moderate percentages in leave-on and rinse-off products. Clinical and patch-test experience generally shows PEGs have low irritancy and low sensitization rates, but mild stinging/irritation can occur in highly reactive or barrier-impaired skin (and rarely due to impurities), so it is best classified as very gentle rather than completely inert. Safety Notes: PEG-32 is a low–medium molecular weight polyethylene glycol commonly used as a humectant/solvent and viscosity/texture modifier; in many leave-on lotions, serums, and creams it appears at low levels (~0.1–3%) to aid slip, solubilization, and moisturization. In rinse-off cleansers and shower products it is often used around ~1–10% for processing/feel and to support surfactant systems. The highest consumer-available levels are seen in very simple, high-humectant bases and bath/shower concentrates where PEGs can function as primary diluents/humectants, reaching roughly 15–25% while remaining within typical safety expectations for PEG ingredients in cosmetics (not subject to a strict EU concentration cap).