What Is Sodium Lauryl Hydroxyacetamide Sulfate?
Sodium Lauryl Hydroxyacetamide Sulfate is a synthetic surfactant created by combining lauryl fatty alcohols—usually sourced from coconut or palm oil—with hydroxyacetamide, then neutralizing and sulfating the mixture to form a water-soluble salt. Introduced in the late twentieth century as a milder alternative to older sulfate detergents, it quickly gained popularity for its ability to create a rich lather while reducing the dryness often linked to traditional sulfates. The manufacturing process involves fatty alcohol derivation, controlled acetamide addition, sulfation in the presence of sulfur trioxide, and final neutralization with sodium hydroxide, yielding a powdered or concentrated liquid ingredient ready for formulators. You will most often encounter it in everyday products like facial cleansers, body washes, shampoos, bubble baths, foaming hand soaps and occasionally in rinse-off masks and shaving creams where effective yet gentle cleansing is prized.
Sodium Lauryl Hydroxyacetamide Sulfate’s Cosmetic Benefits/Uses
Its primary value in skincare and haircare lies in its role as a cleansing agent that balances performance with skin comfort.
- Cleansing: Acts as a surfactant that lifts oil, dirt and product buildup from skin or hair, helping formulas rinse away impurities easily while producing a satisfying foam that users associate with cleanliness
Who Can Use Sodium Lauryl Hydroxyacetamide Sulfate
This surfactant is considered mild enough for most skin types including normal, oily, combination and even many sensitive skins thanks to its lower irritation profile compared with older sulfates. Very dry or highly reactive skin may still feel stripped if the finished formula contains a high percentage of it or lacks replenishing ingredients so those users should opt for products that pair the surfactant with moisturizers or soothing agents.
Sodium Lauryl Hydroxyacetamide Sulfate is synthesized from plant-derived fatty alcohols and is not processed with animal by-products which makes it suitable for vegetarians and vegans.
No data suggest that the ingredient poses unique risks to women who are pregnant or breastfeeding when used in rinse-off cosmetics. That said this is not medical advice and anyone who is pregnant or nursing should review all personal care products with a qualified healthcare professional to be safe.
The ingredient does not increase photosensitivity so it will not make skin more prone to sunburn. It also does not interfere with most active skincare ingredients and is commonly paired with exfoliating acids or retinoids in cleansers without issue.
Potential Side Effects/Adverse Reactions
Responses to topical Sodium Lauryl Hydroxyacetamide Sulfate differ from person to person. The effects listed below are possible not probable and most users will not notice any problems when the final product is formulated correctly.
- Tightness or mild dryness if used at high concentrations or in very hard water
- Transient stinging on compromised or freshly exfoliated skin
- Eye irritation if the product accidentally enters the eyes
- Contact dermatitis in individuals with a true sulfate allergy or extreme sensitivity
If irritation or any undesired reaction occurs discontinue use and consult a healthcare provider if symptoms persist.
Comedogenic Rating
Rating: 1/5
Sodium Lauryl Hydroxyacetamide Sulfate is a water-soluble surfactant that rinses off cleanly and does not linger in pores, so it is very unlikely to clog them. The ingredient does contain a 12-carbon lauryl tail, yet its strong hydrophilic sulfate head keeps it from behaving like an oily film on skin which keeps the comedogenic risk low.
Suitable for acne-prone or breakout-prone skin when used in wash-off products.
Because it leaves skin temporarily more permeable, very oily complexions might wish to follow with a lightweight moisturizer to prevent rebound oil production.
Summary
Sodium Lauryl Hydroxyacetamide Sulfate is primarily a cleanser that lifts dirt, oil and residue through its surfactant action while creating a rich foam that feels luxurious. Its balanced structure lets it clean effectively yet more gently than older sulfate detergents.
The ingredient enjoys steady, if not blockbuster, popularity in modern face cleansers, body washes and shampoos because formulators value its mildness and reliable lather. It has a solid safety record in rinse-off cosmetics with only occasional reports of dryness or irritation at high use levels.
Overall it is considered safe for most users. As with any new skincare product a quick patch test is wise before full use just to be sure your skin agrees with the formula.