Ingredient review
Ammonium Laureth-7 Sulfate
INCI: AMMONIUM LAURETH-7 SULFATE
A gentler relative of SLS that effectively cleanses without stripping the skin or scalp.
In plain English
Ammonium Laureth-7 Sulfate is a synthetic cleansing ingredient that helps water and oil mix so dirt and excess oil can be rinsed away. It is chemically similar to sodium lauryl sulfate (SLS) but has extra ethylene oxide groups that make it milder and less drying. In practice, it creates a rich lather and leaves skin feeling clean but not tight.
Quick decision guide
Useful, but context matters
Ammonium Laureth-7 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 Ammonium Laureth-7 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
A sulfated anionic surfactant derived from lauryl alcohol, ethoxylated with 7 moles of ethylene oxide, and neutralized with ammonium hydroxide. It belongs to the alkyl ether sulfate family, known for balancing cleansing power with mildness.
How it works
It reduces the surface tension between water and oil, allowing the water to lift away sebum, dirt, and makeup. The ethoxylation (7 EO units) adds water-attracting chains that make the molecule larger and less penetrating, which lowers irritation compared to shorter-chain sulfates.
Pros
Milder than SLS
The 7 EO units make this surfactant less irritating than sodium lauryl sulfate, so it is better for daily use on skin and scalp.
Excellent foam quality
It produces a dense, creamy lather that many users associate with a satisfying clean, making it popular in shampoos and body washes.
Cons and cautions
Potential trace impurity
As an ethoxylated ingredient, it may contain trace amounts of 1,4-dioxane, a possible carcinogen. Reputable manufacturers purify to low levels, but it is a concern for some consumers.
Not for ultra-sensitive skin
While gentler than SLS, it can still disrupt the skin barrier if used excessively or on already irritated skin.
Best for
- People with normal to oily skin or hair
- Those who prefer sulfate-based cleansers but want less irritation than SLS
Use caution if
- Individuals with severely compromised skin barrier or active eczema
- Anyone seeking a completely sulfate-free routine
Usage tips
Safety summary
Ammonium Laureth-7 Sulfate is considered safe for use in rinse-off cosmetics at typical concentrations. The main safety consideration is the potential presence of 1,4-dioxane, which is regulated and can be minimized through purification. Skin irritation is low but possible for sensitive individuals.
Research notes
Studies show that alkyl ether sulfates with higher ethoxylation (like 7 EO) are significantly less irritating than SLS. The CIR panel reviewed data and concluded these ingredients are safe in rinse-off products. No robust human data links cosmetic use to long-term health risks.
Common label clues
- Typical concentration
- 1–15% in rinse-off products
- Regulatory status
- Approved for use in cosmetics by the FDA and the European Commission. The Cosmetic Ingredient Review (CIR) panel has deemed alkyl ether sulfates safe when formulated to minimize irritation.
- Common uses
- Shampoos, Body washes, Facial cleansers, Shower gels
- Environmental note
- Biodegradable under aerobic conditions, but ethoxylated surfactants can persist in certain environments. Manufacturers are working on greener production methods.
Good to know
- The number '7' refers to the average moles of ethylene oxide, which directly influences mildness.
- Ammonium salts are often used in shampoos because they are more water-soluble than sodium salts at lower temperatures.
Common questions
What is Ammonium Laureth-7 Sulfate in beauty products?
Ammonium Laureth-7 Sulfate is a synthetic cleansing ingredient that helps water and oil mix so dirt and excess oil can be rinsed away. It is chemically similar to sodium lauryl sulfate (SLS) but has extra ethylene oxide groups that make it milder and less drying. In practice, it creates a rich lather and leaves skin feeling clean but not tight.
What does Ammonium Laureth-7 Sulfate do in a beauty product?
It reduces the surface tension between water and oil, allowing the water to lift away sebum, dirt, and makeup. The ethoxylation (7 EO units) adds water-attracting chains that make the molecule larger and less penetrating, which lowers irritation compared to shorter-chain sulfates.
Is Ammonium Laureth-7 Sulfate safe for most people?
Ammonium Laureth-7 Sulfate is considered safe for use in rinse-off cosmetics at typical concentrations. The main safety consideration is the potential presence of 1,4-dioxane, which is regulated and can be minimized through purification. Skin irritation is low but possible for sensitive individuals.
Who should be careful with Ammonium Laureth-7 Sulfate?
Individuals with severely compromised skin barrier or active eczema Anyone seeking a completely sulfate-free routine
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.