Ingredient deep-dive
PPG (Polypropylene Glycol): Is It a Microplastic?
Synthetic polymer in the propylene glycol family.
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Is PPG (Polypropylene Glycol) a microplastic?
Related ingredients
PEG (Polyethylene Glycol)
PEG / glycol · Medium concern
Synthetic polymer / surfactant family. Often contaminated with 1,4-dioxane during manufacture.
Read morePEG-100 Stearate
PEG / glycol · Low concern
Ethoxylated emulsifier, one of the most common in lotions. Not a microplastic. The real question with PEGs is manufacturing purity, since ethoxylation can leave traces of 1,4-dioxane, a probable human carcinogen.
Read morePEG-40 Hydrogenated Castor Oil
PEG / glycol · Low concern
Ethoxylated castor oil used to dissolve fragrance and oils into water. Plant-derived backbone, ethoxylated. Not a microplastic; the concern is 1,4-dioxane purity.
Read morePEG-12 Dimethicone
PEG / glycol · Low concern
Water-dispersible silicone made by attaching PEG chains to a siloxane. Neither part is a microplastic, but it inherits the ethoxylate purity question.
Read more