Cosmetic ingredient

GLYCOL

Glycol refers to ethylene glycol, a clear, colourless, viscous liquid in the diol family. It appears in ingredient lists in capitals as GLYCOL, while the name ethylene glycol distinguishes it from other compounds whose names also contain “glycol”.

INCIGL1 products
CAS number
107-21-1
EC number
203-473-3
Chemical name
Ethane-1,2-diol, Ethylene glycol

GLYCOL: what it is

Glycol refers to ethylene glycol, a clear, colourless, viscous liquid in the diol family. It appears in ingredient lists in capitals as GLYCOL, while the name ethylene glycol distinguishes it from other compounds whose names also contain “glycol”.

Its feedstock is not botanical: ethylene glycol is made industrially by reacting ethylene oxide with water. That origin and its ready mixing with water help explain its place in liquid preparations, but do not make it another name for propylene glycol or polyethylene glycol.

GLYCOL: what it does in cosmetics

In cosmetics, glycol can work as a solvent. In practical terms, it can help dissolve or incorporate compatible substances into the liquid part of a formula, supporting a more even mixture during preparation.

It is also listed for humectant and viscosity-controlling functions. A humectant holds moisture, while viscosity control helps set whether a product flows more freely or feels thicker. Those functions describe behaviour in a formula; by themselves they do not establish treatment for dryness, wrinkles, or any skin condition.

GLYCOL: conditions and care

Ethylene glycol must not be swallowed. Its GHS classification includes “harmful if swallowed”, a concrete precaution that is separate from any cosmetic benefit claim.

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Products containing this ingredient

See which products include it and the name used in each composition.