Ingredient review
Glycereth-20 Benzoate
INCI: GLYCERETH-20 BENZOATE
A gentle, water-soluble emollient that helps products feel silky and spread easily without greasiness.
In plain English
Glycereth-20 Benzoate is a semi-synthetic ingredient made by combining glycerin (a natural humectant) with benzoic acid and ethylene oxide. It acts as an emollient, meaning it softens and smooths the skin by filling in tiny gaps between skin cells. Unlike heavy oils, it feels light and non-greasy, and it also helps other ingredients mix well together in a formula. You'll often find it in moisturizers, sunscreens, and makeup removers to improve texture and application.
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-20 Benzoate 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-20 Benzoate.
- 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
A semi-synthetic compound derived from glycerin, benzoic acid, and ethylene oxide. It belongs to the family of ethoxylated glycerin esters and is used primarily as an emollient and skin-conditioning agent.
How it works
It works by forming a thin, flexible film on the skin's surface that reduces water loss and smooths rough patches. Its molecular structure allows it to dissolve both water-soluble and oil-soluble ingredients, helping formulas feel uniform and spread easily. This also enhances the sensory feel of products, making them silky and non-sticky.
Pros
Lightweight feel
Unlike heavy oils, Glycereth-20 Benzoate leaves a silky, non-greasy finish, making it ideal for daytime moisturizers and sunscreens.
Improves formula texture
It helps creams and lotions spread smoothly and evenly, so you need less product to cover your face, and it reduces pilling under makeup.
Cons and cautions
Manufacturing concerns
The production process involves ethylene oxide, which can be a concern for some consumers, though the final ingredient is considered safe at typical use levels.
Limited skin benefit data
Most of its benefits are about improving product feel and stability, rather than providing direct, long-term skin health improvements like antioxidants or peptides.
Best for
- People with normal to dry skin looking for lightweight hydration
- Those who prefer non-greasy, silky-feeling moisturizers
Use caution if
- Individuals with known allergies to ethoxylated ingredients (rare)
Usage tips
Safety summary
Glycereth-20 Benzoate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types, including sensitive skin. As with any ingredient, patch test if you have a history of reactions to ethoxylated compounds.
Research notes
Research on Glycereth-20 Benzoate specifically is limited, but it belongs to a well-studied class of ethoxylated glycerin esters. The Cosmetic Ingredient Review (CIR) has assessed similar ingredients and found them safe for topical use. Most evidence comes from formulation science rather than clinical skin health studies.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics by the U.S. FDA and the European Commission. The Cosmetic Ingredient Review (CIR) panel has reviewed similar ethoxylated glycerin esters and found them safe as used.
- Common uses
- Moisturizers, Sunscreens, Makeup removers, Hair conditioners
- Environmental note
- Ethoxylated ingredients may have moderate biodegradability. Some manufacturers are moving toward greener production methods to reduce environmental impact.
Good to know
- It is often used as a replacement for silicones in 'silicone-free' formulas.
- The '20' in its name refers to the number of ethylene oxide units, which affects its water solubility.
Common questions
What is Glycereth-20 Benzoate in beauty products?
Glycereth-20 Benzoate is a semi-synthetic ingredient made by combining glycerin (a natural humectant) with benzoic acid and ethylene oxide. It acts as an emollient, meaning it softens and smooths the skin by filling in tiny gaps between skin cells. Unlike heavy oils, it feels light and non-greasy, and it also helps other ingredients mix well together in a formula. You'll often find it in moisturizers, sunscreens, and makeup removers to improve texture and application.
What does Glycereth-20 Benzoate do in a beauty product?
It works by forming a thin, flexible film on the skin's surface that reduces water loss and smooths rough patches. Its molecular structure allows it to dissolve both water-soluble and oil-soluble ingredients, helping formulas feel uniform and spread easily. This also enhances the sensory feel of products, making them silky and non-sticky.
Is Glycereth-20 Benzoate safe for most people?
Glycereth-20 Benzoate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types, including sensitive skin. As with any ingredient, patch test if you have a history of reactions to ethoxylated compounds.
Who should be careful with Glycereth-20 Benzoate?
Individuals with known allergies to ethoxylated ingredients (rare)
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.