Toxic Chemical Glossary:
What is Propylene Glycol: Chemical Free Living
What is propylene glycol?
Propylene glycol is a synthetic, clear, colorless and odorless liquid substance that’s commonly used as a skin conditioning agent. It is also used as an ingredient in fragrances, a humectant in certain medications, cosmetics, and foods, and as a viscosity decreasing agent  .
What products is propylene glycol in?
Propylene glycol is found in cosmetics, pharmaceuticals, and food products in small amounts  as well as in detergents and baby products .
How to tell if a product has propylene glycol
Propylene may be listed as 1,2-dihydroxypropane, 1,2-propanediol, 2-hydroxypropanol, methylethyl glycol, proane-1,2-diol, 1,2-dihydroxypropane, 1,2-propylene glycol, alpha-propyleneglycol, dowfrost, or methylethylene glycol .
Risks associated with propylene glycol
This chemical is associated with skin irritation, eye and lung irritation with frequent or prolonged contact and organ system toxicity.  
How to avoid propylene glycol
Read ingredient labels and always avoid products that contain propylene glycol or any of its synonyms like 1,2-dihydroxypropane, 1,2-propanediol, 2-hydroxypropanol, methylethyl glycol, proane-1,2-diol, 1,2-dihydroxypropane, 1,2-propylene glycol, alpha-propyleneglycol, dowfrost, or methylethylene glycol . In personal care products, do your own research on a product’s ingredients by using a resource such as the Environmental Working Group’s Skin Deep product database.
 EWG’s Skin Deep Cosmetics Database (2007-2016). Propylene Glycol Available online: https://www.ewg.org/skindeep/ingredient/705315/PROPYLENE_GLYCOL/ December 7, 2016.
 Leavitt, J. (2015). Guest Blog Post for Healthy Child Healthy World: Baby Care Products: Always Read the Label. Available online: http://www.biconi.com/guest-blog-post-for-healthy-child-healthy-world-baby-care-products-always-read-the-label/ December 7, 2016.
 Agency for Toxic Substances and Disease Registry (1997). Public Health Statement for Propylene Glycol. Available online: https://www.atsdr.cdc.gov/PHS/PHS.asp?id=1120&tid=240 December 7, 2016.