Ingredient review
Glycereth-7 Triacetate
INCI: GLYCERETH-7 TRIACETATE
A gentle, modified glycerin that helps soften and smooth skin without the sticky feel of plain glycerin.
In plain English
Glycereth-7 Triacetate is a version of glycerin that has been chemically modified to be less sticky and more spreadable. It works by forming a thin, non-greasy film on your skin that helps hold in moisture and leaves your skin feeling soft and smooth. Because it's derived from glycerin, it's generally very gentle and unlikely to cause irritation or clog pores.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Glycereth-7 Triacetate is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Glycereth-7 Triacetate.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
Glycereth-7 Triacetate is a semi-synthetic ingredient created by reacting glycerin with ethylene oxide and acetic acid. It belongs to a class of compounds called glycereths, which are known for their mildness and ability to improve the feel of skincare products.
How it works
When applied to the skin, Glycereth-7 Triacetate sits on the surface and forms a light, breathable film. This film helps reduce water loss from the skin (a process called transepidermal water loss, or TEWL) while also making the skin feel smoother and softer. Unlike plain glycerin, it doesn't feel tacky or sticky, making it a popular choice for lightweight moisturizers.
Pros
Lightweight feel
Unlike plain glycerin, Glycereth-7 Triacetate leaves a silky, non-sticky finish that works well under makeup or sunscreen.
Very gentle
It has a low irritation and comedogenic risk, making it suitable for sensitive and acne-prone skin types.
Cons and cautions
Moderate hydration
It provides surface-level moisture and smoothing but may not deliver deep hydration for very dry or dehydrated skin.
Less research
Compared to glycerin, there are fewer studies on Glycereth-7 Triacetate, so its long-term effects are less documented.
Best for
- People with normal to combination skin looking for lightweight hydration
- Those who find plain glycerin too sticky or tacky
Use caution if
- Individuals with very dry or dehydrated skin may benefit more from humectants like glycerin or hyaluronic acid
Usage tips
Safety summary
Glycereth-7 Triacetate is considered safe for use in cosmetics. It has low irritation and comedogenic potential, making it suitable for most skin types, including sensitive skin.
Research notes
While glycerin and its derivatives are well-studied, specific research on Glycereth-7 Triacetate is limited. Existing safety assessments from the CIR support its use in cosmetics at typical concentrations.
Common label clues
- Typical concentration
- Typically 0.5% to 5% in leave-on products
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. The Cosmetic Ingredient Review (CIR) panel has deemed it safe at typical usage levels.
- Common uses
- Moisturizers, Serums, Cleansers, Hair conditioners
- Environmental note
- As a semi-synthetic ingredient, its environmental impact is moderate. It is not known to be bioaccumulative, but its production involves petrochemical-derived ethylene oxide.
Good to know
- Glycereth-7 Triacetate is often used to improve the sensory feel of products, making them glide on more smoothly.
- It is considered safe by the Cosmetic Ingredient Review (CIR) panel when used as directed.
Common questions
What is Glycereth-7 Triacetate in beauty products?
Glycereth-7 Triacetate is a version of glycerin that has been chemically modified to be less sticky and more spreadable. It works by forming a thin, non-greasy film on your skin that helps hold in moisture and leaves your skin feeling soft and smooth. Because it's derived from glycerin, it's generally very gentle and unlikely to cause irritation or clog pores.
What does Glycereth-7 Triacetate do in a beauty product?
When applied to the skin, Glycereth-7 Triacetate sits on the surface and forms a light, breathable film. This film helps reduce water loss from the skin (a process called transepidermal water loss, or TEWL) while also making the skin feel smoother and softer. Unlike plain glycerin, it doesn't feel tacky or sticky, making it a popular choice for lightweight moisturizers.
Is Glycereth-7 Triacetate safe for most people?
Glycereth-7 Triacetate is considered safe for use in cosmetics. It has low irritation and comedogenic potential, making it suitable for most skin types, including sensitive skin.
Who should be careful with Glycereth-7 Triacetate?
Individuals with very dry or dehydrated skin may benefit more from humectants like glycerin or hyaluronic acid
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.