PEG-26 Buteth-26

PEG

8/10

Concern level

High concern

PEG-26 Buteth-26 is a nonionic polyethylene glycol/polyoxyalkylene ether used primarily as a solubilizer, surfactant, and emulsifier in cosmetics. It helps disperse fragrance oils, essential oils, and other lipophilic ingredients into water-based systems, improving clarity and formulation stability. It is generally considered a low-risk ingredient in finished products when used within normal cosmetic concentrations and when the final formula is non-irritating.

Pore-clogging

Non-comedogenic

Pregnancy

Safe

Regulatory

No data

Concerns

PEG

Chemical Properties

Typical Concentration

0.10% - 2.50%

CAS Number: 9065-63-8

Skin Type Compatibility

dry skin7/10

oily skin7/10

sensitive skin5/10

acne prone8/10

mature skin7/10

normal skin8/10

Interactions

incompatible with: May increase penetration or irritation when paired with high levels of fragrance, essential oils, or other surfactants, Use caution in formulas with compromised-skin actives or high alcohol content, Not known for specific direct chemical incompatibilities in normal cosmetic use

Risks & Warnings

Low inherent toxicity in cosmetic use, but as with other ethoxylated PEG-type ingredients, trace impurities from manufacturing (e.g., 1,4-dioxane) are a quality-control consideration. May rarely contribute to irritation in very sensitive or compromised skin, especially in products containing alcohol, fragrance, or other surfactants.

Vegan Cruelty-Free

Found In Products

Isle of Paradise