Ingredient review
Hydroxystearyl Methylglucamine
INCI: Hydroxystearyl Methylglucamine
A mild, sugar-derived emulsifier that helps mix oil and water in cleansers and creams without stripping the skin.
In plain English
Hydroxystearyl Methylglucamine is a gentle ingredient that helps oil and water stay blended in your skincare products. It comes from natural sugar (glucose) and a fatty acid from plant oils, so it’s considered mild and less likely to irritate than harsher cleansers. You’ll find it in creamy cleansers, lotions, and moisturizers where it helps create a smooth, stable texture.
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
Hydroxystearyl Methylglucamine 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 Hydroxystearyl Methylglucamine.
- 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 surfactant and emulsifier made by combining methylglucamine (derived from glucose) with hydroxystearic acid (a fatty acid from castor or other plant oils). It belongs to a class of mild, sugar-based cleansing agents.
How it works
It reduces the surface tension between oil and water, allowing them to mix into a stable emulsion. In cleansers, it helps lift dirt and oil from the skin while being gentle enough not to disrupt the skin’s natural moisture barrier.
Pros
Gentle on skin
Derived from natural sugar and plant fatty acids, it cleans without stripping the skin’s natural moisture barrier, making it suitable for daily use.
Stable emulsions
It helps create smooth, creamy textures in lotions and cleansers that don’t separate easily, improving product feel and shelf life.
Cons and cautions
Limited research
Compared to more common surfactants like coco-glucoside, there is less published safety and efficacy data, though existing evidence supports its mildness.
Potential allergen
Since it’s derived from castor oil, individuals with rare castor oil allergies may experience irritation; patch testing is recommended.
Best for
- People with normal to dry skin looking for a gentle cleanser
- Those who prefer mild, sugar-derived ingredients over sulfates
Use caution if
- Individuals with known allergies to castor oil derivatives should patch test first
Usage tips
Safety summary
Hydroxystearyl Methylglucamine is generally recognized as safe for topical use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, though individuals with castor oil allergies should exercise caution. Regulatory bodies have not flagged significant safety concerns.
Research notes
Available research focuses on its mildness and efficacy as a surfactant in cosmetic formulations. While not as extensively studied as some common surfactants, existing data from ingredient safety reviews and formulation studies support its safe use at typical levels.
Common label clues
- Typical concentration
- 1–5% in rinse-off products; lower in leave-on formulations
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Cleansers, Lotions, Creams
- Environmental note
- Derived from renewable plant sources (glucose and castor oil) and considered biodegradable, making it a more sustainable choice compared to petroleum-based emulsifiers.
Good to know
- It is often used alongside other mild surfactants to boost foam without increasing irritation.
- This ingredient is considered biodegradable and more environmentally friendly than some traditional surfactants.
Common questions
What is Hydroxystearyl Methylglucamine in beauty products?
Hydroxystearyl Methylglucamine is a gentle ingredient that helps oil and water stay blended in your skincare products. It comes from natural sugar (glucose) and a fatty acid from plant oils, so it’s considered mild and less likely to irritate than harsher cleansers. You’ll find it in creamy cleansers, lotions, and moisturizers where it helps create a smooth, stable texture.
What does Hydroxystearyl Methylglucamine do in a beauty product?
It reduces the surface tension between oil and water, allowing them to mix into a stable emulsion. In cleansers, it helps lift dirt and oil from the skin while being gentle enough not to disrupt the skin’s natural moisture barrier.
Is Hydroxystearyl Methylglucamine safe for most people?
Hydroxystearyl Methylglucamine is generally recognized as safe for topical use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, though individuals with castor oil allergies should exercise caution. Regulatory bodies have not flagged significant safety concerns.
Who should be careful with Hydroxystearyl Methylglucamine?
Individuals with known allergies to castor oil derivatives should 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.