Glycereth-7 Trimethyl Ether



Glycereth-7 Trimethyl Ether at a glance

  • Works as an emollient and humectant to enhance skin moisturization and hydration
  • Imparts a silky feel to skin, leaving a subtly dry finish
  • May also be used to mitigate tacky finish in gel-based products
  • Transparent, light-yellow liquid in raw material state

Glycereth-7 Trimethyl Ether description

Glycereth-7 trimethyl ether is a synthetic compound derived from glycerin and trimethyl ether. Its role in skin care and other personal care products is to serve as both an emollient and a humectant to enhance skin moisturization (ability to stay supple) and hydration (ability to retain water). It can also function as a solvent. Although independent studies have yet to be conducted, suppliers of glycereth-7 trimethyl ether highlight its remarkable ability to impart a silky, emollient touch to the skin, leaving a subtly dry finish. Glycereth-7 trimethyl ether’s impressive stability across a wide pH spectrum is touted as particularly advantageous in formulations containing salicylic acid (BHA), enhancing overall formulary compatibility. Additionally, in carbomer-based gels, it effectively mitigates tackiness, contributing to a more pleasant sensory experience. In its raw material state, glycereth-7 trimethyl ether presents as a transparent, light-yellow liquid. Suggested use level of this ingredient is 5–6%. At the time of this writing, the Cosmetic Ingredient Review Expert Panel has not conducted a formal safety assessment of glycereth-7 trimethyl ether. Currently there is no evidence suggesting any safety concerns associated with its use in cosmetic products.

Glycereth-7 Trimethyl Ether references

  • Personal Care Products Council, Accessed September 2023, ePublication
  • UL Prospector, Accessed September 2023, ePublication

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not rated

We have not yet rated this ingredient because we have not had a chance to review the research on it.