Propanediol/ Proplyne Glycol

Propanediol is a colorless, odorless, viscous solvent often used in skin products.
  •  Can cause irritation in rare circumstances
  • No studies showing many benefits in the form of propanediol. 
  • mostly considered safe 

https://www.ewg.org/skindeep/ingredient/723043/PROPANEDIOL/#.WfZ5nROPKu4

https://www.ewg.org/skindeep/ingredient/705315/PROPYLENE_GLYCOL/#.WfZ8GhOPKu4

https://www.atsdr.cdc.gov/phs/phs.asp?id=1120&tid=240



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