Ingredient review
Sodium Lauryl Hydroxyacetamide Sulfate
INCI: Sodium Lauryl Hydroxyacetamide Sulfate
A gentler alternative to traditional sulfates that effectively cleanses without stripping the skin's moisture barrier.
In plain English
This is a synthetic cleansing ingredient that helps water mix with oil and dirt so they can be rinsed away. It's designed to be milder than older sulfates like sodium lauryl sulfate (SLS), so it's less likely to leave your skin feeling tight or dry. You'll find it in foaming cleansers, shampoos, and body washes where it creates a rich lather without being overly harsh.
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
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Sodium Lauryl Hydroxyacetamide Sulfate 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 Sodium Lauryl Hydroxyacetamide Sulfate.
- 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
Sodium Lauryl Hydroxyacetamide Sulfate is a modified sulfate surfactant. It's made by adding a hydroxyacetamide group to the lauryl chain, which reduces its ability to strip natural oils from the skin compared to standard SLS.
How it works
In a cosmetic product, it lowers the surface tension between water and oil, allowing dirt, sebum, and makeup to be emulsified and washed away. Its molecular structure makes it less penetrating into the skin barrier, which translates to milder cleansing.
Pros
Gentler on skin
Its modified structure makes it less likely to strip natural oils, reducing tightness and irritation after washing.
Excellent foam quality
Produces a dense, creamy lather that many users find satisfying, without the harshness of older sulfates.
Cons and cautions
Still a sulfate
If you have very sensitive or reactive skin, even this milder sulfate may cause dryness or irritation over time.
Synthetic ingredient
Not derived from natural sources, which may be a drawback for those seeking plant-based or minimal-ingredient routines.
Best for
- People with normal to oily skin who want a foaming cleanser without excessive dryness
- Those looking for a sulfate-based cleanser that is gentler than SLS or SLES
Use caution if
- Individuals with very dry, eczema-prone, or severely compromised skin barriers may prefer non-sulfate surfactants
Usage tips
Safety summary
Sodium Lauryl Hydroxyacetamide Sulfate is considered safe for use in rinse-off cosmetics at typical concentrations. It has low irritation and comedogenic potential, though individuals with very sensitive skin may still experience dryness. No significant safety concerns have been raised by regulatory bodies.
Research notes
Limited peer-reviewed studies specifically on this ingredient, but it is structurally similar to other mild sulfates. Safety assessments rely on general surfactant toxicology, which supports its use at low to moderate concentrations. More research would help confirm its mildness profile compared to alternatives.
Common label clues
- Typical concentration
- Typically 5–15% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No specific restrictions beyond general surfactant safety guidelines.
- Common uses
- Facial cleansers, Body washes, Shampoos, Shower gels
- Environmental note
- Biodegradable under standard conditions, but as a synthetic surfactant, its production relies on petrochemical feedstocks.
Good to know
- This ingredient is often found in 'sulfate-free' labeled products that actually contain mild sulfates—always check the full INCI list.
- It is biodegradable and generally considered safe for aquatic life at typical use concentrations.
Common questions
What is Sodium Lauryl Hydroxyacetamide Sulfate in beauty products?
This is a synthetic cleansing ingredient that helps water mix with oil and dirt so they can be rinsed away. It's designed to be milder than older sulfates like sodium lauryl sulfate (SLS), so it's less likely to leave your skin feeling tight or dry. You'll find it in foaming cleansers, shampoos, and body washes where it creates a rich lather without being overly harsh.
What does Sodium Lauryl Hydroxyacetamide Sulfate do in a beauty product?
In a cosmetic product, it lowers the surface tension between water and oil, allowing dirt, sebum, and makeup to be emulsified and washed away. Its molecular structure makes it less penetrating into the skin barrier, which translates to milder cleansing.
Is Sodium Lauryl Hydroxyacetamide Sulfate safe for most people?
Sodium Lauryl Hydroxyacetamide Sulfate is considered safe for use in rinse-off cosmetics at typical concentrations. It has low irritation and comedogenic potential, though individuals with very sensitive skin may still experience dryness. No significant safety concerns have been raised by regulatory bodies.
Who should be careful with Sodium Lauryl Hydroxyacetamide Sulfate?
Individuals with very dry, eczema-prone, or severely compromised skin barriers may prefer non-sulfate surfactants
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.