Ingredient · Updated
PEG
Found in 2 products
What is PEG?
PEG, short for Polyethylene Glycol, is a polymer compound produced by the polymerization of ethylene oxide and water. It is available in various molecular weights, which determine its properties and uses.
PEG is used in cosmetics and dental products for its ability to act as a thickener, solvent, and moisture-carrier. Its medical uses include serving as a laxative and a lubricant in pharmaceuticals. Health evidence is mixed; PEGs themselves are considered non-toxic but can be contaminated with toxic impurities during manufacturing, which raises some safety considerations.
When you see PEG on a label, it indicates the product may use it for texture or consistency. Look for additional quality certifications if contamination is a concern.
Commonly found in: toothpastes, cosmetics, pharmaceuticals, skin creams, shampoos
What to watch
- PEGs can sometimes contain impurities like ethylene oxide and 1,4-dioxane, which are potentially hazardous.
Benefits
- PEGs improve the consistency and stability of cosmetic products.
- PEGs are effective as a moisture carrier, enhancing the product's hydration effects.
The FDA recognizes PEGs as safe for certain uses, but they monitor for contamination from manufacturing.
Studies show PEGs are generally safe, but concerns exist about contaminants like 1,4-dioxane.
PEG is synthetic and not derived from animals, making it suitable for vegan products.
Sources: GRAS Substances
Scout's take
Polyethylene glycol (PEG) compounds can be contaminated with ethylene oxide and 1,4-dioxane, both of which are potential carcinogens. They are used to enhance texture and stability but pose contamination risks. The contamination risk is a significant concern.
The case against
Contamination with ethylene oxide and 1,4-dioxane, both potential carcinogens.
from the analysis of Tide EVO Detergent Original ScentThe case for
Improves texture and stability of formulations.
from the analysis of Tide EVO Detergent Original ScentMore from Scout's analyses
PEG (polyethylene glycol) is used as a humectant and thickener. It can be a concern due to its potential for contamination with harmful impurities and is considered a synthetic ingredient.
from the analysis of Crest 3D Whitestrips Sensitive & Gentle At-home Teeth Whitening KitAll 2 products with PEG
Where PEG shows up
Higher-scoring picks without PEG
Products from the same categories whose analyzed ingredient list does not include PEG, scoring 80 or above.
Scan any product to see every ingredient explained — and healthier swaps.