Cas No:25322-68-3




Rating: GOOD
Categories: Cleansing Agent, Emollient, Emulsifier

PEG is an acronym for polyethylene glycol(聚乙二醇), an amazingly versatile ingredient in skin care products because of the many uses it has and its broad compatibility with different types of ingredients. PEG is often mixed with an array of hydrating emollients, beneficial fatty acids, and cleansing agents. In these various combinations, a PEG can be used in gentle cleansers, elegant moisturizers, sunscreens, and unique treatment products.

The safety of PEG in its various forms has recently been questioned. The primary concern is that they can contain problematic impurities such as ethylene oxide and 1,4 dioxane. Both of these are by-products from the manufacturing process, not something natural to any form of PEG. Although this was once a concern, reputable cosmetic ingredient suppliers have long since eliminated these impurities from the finished ingredient, which makes PEGs safe for skin.

What is most notable about the various forms of PEG studied to date is they have been shown to be non-irritating for skin or eyes, even when used in concentrations greater than what most skin care products contain. PEGs also widely considered non-toxic because they do not penetrate intact skin. However, as is true for even the gentlest ingredients, when skin is inflamed or compromised, the risk of irritation is increased.

If you’ve seen conflicting information about PEG ingredients, it’s important to know that the conclusions were not applicable to how PEGs are used in skin care products. These studies involved feeding a large amount of PEG to animals or applying very high doses (literally hundreds of magnitudes greater than what is used in topical products) to mouse skin.

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