Propylene glycol is on the U.S. Food and Drug Administration (FDA) generally regarded as safe list (not to be confused with ethylene glycol, which is extremely toxic if ingested). According the FDA, as a food additive, propylene glycol is metabolized in the body and is used as a normal carbohydrate source. Long-term use and substantial quantities of propylene glycol (up to five percent of the total food intake) can be consumed without causing toxicity.
- Propylene glycol is a small organic alcohol commonly used as a skin conditioning agent
- Propylene glycol is used as moisturizer in cosmetic products and as a dispersant in fragrances.
- There are many other food and industrial uses for propylene glycol.