Ingredient review
Glycereth-6 C10-18 Acidate
INCI: GLYCERETH-6 C10-18 ACIDATE
A gentle, glycerin-based surfactant that cleanses without stripping the skin's natural moisture barrier.
In plain English
This ingredient is a mild cleansing agent made by combining glycerin (a moisturizing alcohol) with medium-chain fatty acids (C10-18). It helps remove dirt and oil from skin and hair while being much gentler than traditional harsh soaps. Because it's derived from glycerin, it also has some moisturizing properties, making it a popular choice for sensitive skin cleansers.
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-6 C10-18 Acidate 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-6 C10-18 Acidate.
- 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-6 C10-18 Acidate is a semi-synthetic surfactant and emulsifier. It is created by reacting glycerin with fatty acids (specifically those with 10 to 18 carbon atoms) and adding a small ethylene oxide chain (6 units) to improve water solubility and mildness.
How it works
In a cosmetic product, this ingredient works by reducing the surface tension between water and oil, allowing them to mix and rinse away impurities. Its glycerin backbone helps it attract and retain moisture, so it cleanses without completely stripping the skin's natural oils.
Pros
Gentle on skin
This surfactant is much milder than traditional sulfates, making it suitable for daily use without causing excessive dryness or irritation.
Moisture-friendly
Because it's derived from glycerin, it helps retain some moisture during cleansing, leaving skin feeling softer than with harsher cleansers.
Cons and cautions
Less foaming than sulfates
It produces a moderate foam, which some users may perceive as less satisfying compared to high-foam cleansers.
Limited research
Compared to more common surfactants, there is less published research on its long-term effects, though available data suggest it is safe.
Best for
- People with normal to combination skin
- Those looking for a milder alternative to sodium lauryl sulfate (SLS)
Use caution if
- Individuals with extremely dry or eczema-prone skin may still find it slightly drying; patch test first
Usage tips
Safety summary
Glycereth-6 C10-18 Acidate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. Always patch test if you have sensitive skin.
Research notes
While not as extensively studied as some common surfactants, available safety assessments and ingredient reviews support its use as a mild cleansing agent. It is generally recognized as safe by cosmetic ingredient review panels.
Common label clues
- Typical concentration
- 1-10%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No specific restrictions noted.
- Common uses
- Cleansers, Shampoos, Body washes, Facial washes
- Environmental note
- As a semi-synthetic ingredient, it is generally considered biodegradable, but its environmental impact is less documented than some plant-based surfactants.
Good to know
- This ingredient is often used in 'sulfate-free' formulations.
- It is compatible with a wide pH range, making it versatile for different product types.
Common questions
What is Glycereth-6 C10-18 Acidate in beauty products?
This ingredient is a mild cleansing agent made by combining glycerin (a moisturizing alcohol) with medium-chain fatty acids (C10-18). It helps remove dirt and oil from skin and hair while being much gentler than traditional harsh soaps. Because it's derived from glycerin, it also has some moisturizing properties, making it a popular choice for sensitive skin cleansers.
What does Glycereth-6 C10-18 Acidate do in a beauty product?
In a cosmetic product, this ingredient works by reducing the surface tension between water and oil, allowing them to mix and rinse away impurities. Its glycerin backbone helps it attract and retain moisture, so it cleanses without completely stripping the skin's natural oils.
Is Glycereth-6 C10-18 Acidate safe for most people?
Glycereth-6 C10-18 Acidate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. Always patch test if you have sensitive skin.
Who should be careful with Glycereth-6 C10-18 Acidate?
Individuals with extremely dry or eczema-prone skin may still find it slightly drying; patch test first
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.