Ingredient review
Hydroxylauryl/Hydroxymyristyl Betaine
INCI: Hydroxylauryl/Hydroxymyristyl Betaine
A gentle, plant-derived surfactant that cleanses without stripping the skin, making it ideal for sensitive and dry skin types.
In plain English
This ingredient is a mild cleansing agent made from coconut oil. It helps create a soft, stable foam in cleansers and shampoos while being much less harsh than traditional soap or sodium lauryl sulfate. It is often used alongside other cleansers to reduce their potential for irritation, leaving skin feeling clean but not tight or dry.
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
- natural
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Hydroxylauryl/Hydroxymyristyl Betaine 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 Hydroxylauryl/Hydroxymyristyl Betaine.
- 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 betaine-based surfactant derived from coconut fatty acids. It belongs to a class of amphoteric surfactants, meaning it can work in both acidic and alkaline formulas, and is known for its gentle cleansing and foam-boosting properties.
How it works
It works by lowering the surface tension between water and oil, allowing dirt, excess sebum, and makeup to be rinsed away. Its amphoteric nature also helps it to be compatible with other surfactants, reducing the overall irritation potential of a cleansing formula.
Pros
Exceptionally gentle
It cleanses without stripping the skin's natural moisture barrier, making it ideal for daily use on sensitive or compromised skin.
Improves formula feel
It creates a rich, creamy foam and can thicken a product, giving a luxurious texture that many users prefer.
Cons and cautions
Limited cleansing power alone
On its own, it may not effectively remove heavy makeup or waterproof sunscreen, so it is usually combined with other cleansers.
Potential for mild dryness at high levels
In very high concentrations, it can still cause slight tightness, though this is rare in well-formulated products.
Best for
- People with sensitive, dry, or eczema-prone skin
- Anyone looking for a gentle daily facial or body cleanser
Use caution if
- Those seeking a single-ingredient, heavy-duty makeup remover
Usage tips
Safety summary
Considered very safe for cosmetic use. It has a low irritation and sensitization profile and is widely used in products for sensitive skin and babies. No significant safety concerns have been identified in regulatory reviews.
Research notes
Research supports its role as a mild surfactant that reduces the irritation potential of harsher cleansers. Studies on similar betaine surfactants show they cause minimal disruption to the skin barrier compared to sulfates.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics globally, including by the FDA (USA) and EU CosIng database, with no known restrictions at typical use levels.
- Common uses
- Facial cleansers, Body washes, Shampoos, Baby care products
- Environmental note
- Derived from renewable coconut oil and is readily biodegradable, making it a more sustainable choice than many petroleum-based surfactants.
Good to know
- It is often derived from coconut oil, making it a popular choice for natural and plant-based formulations.
- It is biodegradable and considered environmentally friendly compared to some synthetic surfactants.
Common questions
What is Hydroxylauryl/Hydroxymyristyl Betaine in beauty products?
This ingredient is a mild cleansing agent made from coconut oil. It helps create a soft, stable foam in cleansers and shampoos while being much less harsh than traditional soap or sodium lauryl sulfate. It is often used alongside other cleansers to reduce their potential for irritation, leaving skin feeling clean but not tight or dry.
What does Hydroxylauryl/Hydroxymyristyl Betaine do in a beauty product?
It works by lowering the surface tension between water and oil, allowing dirt, excess sebum, and makeup to be rinsed away. Its amphoteric nature also helps it to be compatible with other surfactants, reducing the overall irritation potential of a cleansing formula.
Is Hydroxylauryl/Hydroxymyristyl Betaine safe for most people?
Considered very safe for cosmetic use. It has a low irritation and sensitization profile and is widely used in products for sensitive skin and babies. No significant safety concerns have been identified in regulatory reviews.
Who should be careful with Hydroxylauryl/Hydroxymyristyl Betaine?
Those seeking a single-ingredient, heavy-duty makeup remover
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.