Ingredient review
Glycereth-18 Ethylhexanoate
INCI: GLYCERETH-18 ETHYLHEXANOATE
A gentle, water-soluble emollient that hydrates and softens skin without feeling greasy, suitable for most skin types.
In plain English
Glycereth-18 Ethylhexanoate is a semi-synthetic ingredient made by combining glycerin (a natural humectant) with a fatty acid. It acts like a lightweight oil that spreads easily on the skin, helping to lock in moisture and leave a smooth, non-sticky feel. Think of it as a hybrid between a moisturizer and a softener—it hydrates while also making the skin feel silky.
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-18 Ethylhexanoate 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-18 Ethylhexanoate.
- 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-18 Ethylhexanoate is an ester derived from glycerin and ethylhexanoic acid. It belongs to the glycereth family, which are ethoxylated glycerin derivatives. In cosmetics, it functions primarily as an emollient and skin-conditioning agent, offering a light, non-greasy texture.
How it works
When applied to the skin, Glycereth-18 Ethylhexanoate forms a thin, breathable film that reduces water loss (transepidermal water loss, or TEWL) while also filling in rough patches between skin cells. Its glycerin backbone attracts moisture from the air, while the fatty acid portion helps it spread evenly and feel smooth.
Pros
Lightweight hydration
Provides moisture without the heavy, sticky feel of some oils, making it ideal for daytime use or under makeup.
Skin-softening effect
Helps smooth rough texture and leaves skin feeling velvety, which can improve the look of fine lines temporarily.
Cons and cautions
Potential tackiness at high levels
In formulas with more than 5%, it may leave a slightly sticky residue, especially in humid conditions.
Limited independent research
Most safety data comes from manufacturer studies; long-term peer-reviewed human studies are sparse.
Best for
- People with normal to dry skin seeking light moisture
- Those who prefer non-greasy, fast-absorbing products
Use caution if
- Individuals with known sensitivity to ethoxylated ingredients (rare)
Usage tips
Safety summary
Generally recognized as safe for topical use at typical concentrations. Low irritation and comedogenic risk. Rare allergic reactions possible, but overall well-tolerated.
Research notes
Safety assessments by industry panels (e.g., CIR) support its use. Limited clinical studies, but existing data show good skin compatibility and moisturizing efficacy.
Common label clues
- Typical concentration
- 1% to 5%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. Listed on the CosIng database as a skin-conditioning agent.
- Common uses
- Moisturizers, Serums, Cleansers, Sunscreens
- Environmental note
- Semi-synthetic; the glycerin is typically plant-derived, but the ethoxylation process involves ethylene oxide, which has environmental concerns in manufacturing.
Good to know
- It is often used as a replacement for mineral oil in 'natural' formulations due to its plant-derived glycerin base.
- The '18' in the name refers to the number of ethylene oxide units, which affects its water solubility.
Common questions
What is Glycereth-18 Ethylhexanoate in beauty products?
Glycereth-18 Ethylhexanoate is a semi-synthetic ingredient made by combining glycerin (a natural humectant) with a fatty acid. It acts like a lightweight oil that spreads easily on the skin, helping to lock in moisture and leave a smooth, non-sticky feel. Think of it as a hybrid between a moisturizer and a softener—it hydrates while also making the skin feel silky.
What does Glycereth-18 Ethylhexanoate do in a beauty product?
When applied to the skin, Glycereth-18 Ethylhexanoate forms a thin, breathable film that reduces water loss (transepidermal water loss, or TEWL) while also filling in rough patches between skin cells. Its glycerin backbone attracts moisture from the air, while the fatty acid portion helps it spread evenly and feel smooth.
Is Glycereth-18 Ethylhexanoate safe for most people?
Generally recognized as safe for topical use at typical concentrations. Low irritation and comedogenic risk. Rare allergic reactions possible, but overall well-tolerated.
Who should be careful with Glycereth-18 Ethylhexanoate?
Individuals with known sensitivity 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.