Ingredient glossary

Ethoxydiglycol

What Ethoxydiglycol does for your skin, who it suits, and what to watch for.

INCI: Ethoxydiglycol · Also: Diethylene Glycol Monoethyl Ether, DEGEE, Transcutol

Just a base

In short: Ethoxydiglycol delivers solvation and penetration enhancement, plays a broad, supporting role, and the evidence behind it is strong.

What it does
Solvation, penetration enhancement
Best for
A broad, supporting role
Evidence
Strong
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The molecule

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The Glow take

The carrier, not the treatment.

Ethoxydiglycol is the base that carries the real ingredients, not something that treats skin on its own. Judge the formula by what sits further up the list.

— Maya

What it does

  • solvation
  • penetration enhancement

strong evidenceSCCS opinion 1507/13 found diethylene glycol monoethyl ether safe within the Annex III limits later fixed by Regulation 2016/314 at 2.6 percent for non-spray leave-on products with ethylene glycol impurity held under 0.1 percent.

Who it's for, and who should skip it

Tends to suit

No specific skin type. It is a broadly used ingredient.

Approach with care

  • eye area
  • Clogs poresLow
  • Irritation riskLow

How it fits each skin type

  • DryNeutral
  • CombinationNeutral
  • OilyNeutral
  • SensitiveNeutral

Take extra care if any of these apply to you: eye area.

Where it fits in your routine

WhenMorning or evening
Where in the orderAfter cleansing, before your moisturizer

Plays well with

  • solvents

Ethoxydiglycol, answered

Is Ethoxydiglycol safe during pregnancy?

Yes. Ethoxydiglycol is considered safe to use during pregnancy and breastfeeding. As with anything, if you are unsure it is worth a quick word with your doctor or midwife.

Who should avoid Ethoxydiglycol?

Approach Ethoxydiglycol with care if any of these apply to you: eye area.

What concentration of Ethoxydiglycol actually works?

Its concentration is rarely printed on the label, so use the ingredient list as your clue: near the top third it is likely doing real work, near the bottom it is more of a sprinkle.

This, for every label you own

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Sources & how we reviewed this

  1. SCCS opinion 1507/13summary page only, the document itself was not read
  2. EU Regulation 2016/314-AnnexIIIsummary page only, the document itself was not read

Last reviewed August 2026. Educational information about a cosmetic ingredient, not medical advice.