ethoxydiglycol

Ethoxydiglycol at a Glance

  • Solvent that helps improve the penetration of other key ingredients in a skin care formula
  • Popular in self-tanning products due to the way it minimizes streaks
  • Found in all kinds of personal care products, including deodorants and hair dyes
  • Also goes by “diethylene glycol monoethyl ether” or the trademark name “Transcutol®”
  • As a raw material it appears as a clear liquid and is water soluble

Ethoxydiglycol Description

Ethoxydiglycol is considered a safe, well-tolerated synthetic solvent that helps improve the function, penetration, and texture of skin care products. It’s particularly popular in sunless tanning products due to the way it facilitates smooth spreading and minimizes streaking. It can also be found in numerous other personal care products ranging from skin care serums to hair dyes. When used in skin care products, it is known to help key ingredients absorb more effectively.

Ethoxydiglycol also goes by the name diethylene glycol monoethyl ether and is marketed under the trademarked ingredient name Transcutol®. As a raw material it appears as a clear liquid and is water soluble.

In 2013, the European Scientific Committee on Consumer Safety concluded that the use of ethoxydiglycol does not pose a risk in leave-on cosmetic formulations at a maximum concentration of 2.6% “taking into account the other uses previously assessed (10% in rinse-off products, 7.0% in oxidative and 5% in non-oxidative hair dye formulation).”

Ethoxydiglycol References

CosmeticsInfo.org, Accessed May 2021, ePublication
Food and Chemical Toxicology, October 2014, pages 40-50
European Journal of Pharmaceutics and Biopharmaceutics, September 2014, pages 28-33
Scientific Committee on Consumer Safety, June 2013, pages 1-53
Journal of Cosmetic Dermatology, December 2011, pages 324-329
Tropical Journal of Pharmaceutical Research, December 2010, pages 541-548

See solvent

Back to Ingredient Dictionary

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Paula Begoun is the best-selling author of 20 books about skincare and makeup. She is known worldwide as The Cosmetics Cop and creator of Paula’s Choice Skincare. Paula’s expertise has led to hundreds of appearances on national and international radio, print, and television including:

The Paula's Choice Research Team is dedicated to busting beauty myths and providing expert advice that solves your skincare frustrations so you can have the best skin of your life!