Skip to content
thickener · emollient

Glycol Distearate

Commonly feared, low concern·Strong evidence

A wax-like ester of ethylene glycol and stearic acid used purely to thicken shampoo/conditioner and give it a pearly opaque look; it has no cleansing or active role. CIR found it non-sensitizing and non-irritating even at high test concentrations, and decades of manufacturer exposure data show no reported health effects.

The myth vs the evidence

It sounds industrial because of the word "glycol," but glycol distearate is just a wax that makes shampoo look pearly and feel thicker; it is unrelated to the ethylene glycol used in antifreeze in any way that matters for skin contact.

Questions

Is glycol distearate the same as antifreeze?
No. Glycol distearate is a wax-like ingredient made from ethylene glycol and stearic acid, used only to thicken shampoo and give it a pearly look. Although both contain ethylene glycol, they are formulated for entirely different purposes and exposure routes; glycol distearate has been used safely in cosmetics for decades with no reported health effects from skin contact.
What is glycol distearate and why is it in shampoo?
Glycol distearate is a wax-like thickener and opacifier added purely for texture and appearance; it plays no active role in cleansing or conditioning. It is non-irritating and non-sensitizing even at high test concentrations.
Is glycol distearate safe?
The published evidence does not support concerns about glycol distearate safety. Safety assessments have found it non-irritating and non-sensitizing, and decades of manufacturer exposure data show no reported health effects from cosmetic use.

Products with Glycol Distearate

References

Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.