Ingredient review
Laureth-11
INCI: Laureth-11
Laureth-11 is a gentle surfactant and emulsifier that helps cleanse without stripping the skin, making it a good choice for sensitive skin formulations.
In plain English
Laureth-11 is a mild cleansing ingredient that helps water and oil mix together in products like cleansers and shampoos. It removes dirt and excess oil without being harsh, so your skin doesn't feel tight or dry after washing. Think of it as a gentle helper that lifts away grime while keeping your skin's natural moisture barrier intact.
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
Laureth-11 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 Laureth-11.
- 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
Laureth-11 is a semi-synthetic surfactant made by reacting lauryl alcohol (derived from coconut or palm oil) with 11 units of ethylene oxide. It belongs to the laureth family, known for their mild cleansing and emulsifying properties.
How it works
In a cosmetic product, Laureth-11 reduces the surface tension between water and oil, allowing them to blend into a stable mixture. When you rinse, it helps lift dirt, oil, and makeup from your skin so they wash away easily. Its mild nature means it cleans without disrupting the skin's protective barrier as much as stronger surfactants like sodium lauryl sulfate.
Pros
Mild on skin
Laureth-11 cleans without stripping natural oils, making it suitable for daily use even on sensitive or dry skin.
Good emulsifier
It helps create stable, creamy textures in lotions and cleansers, improving product feel and performance.
Cons and cautions
Ethoxylation concerns
As an ethoxylated ingredient, it may contain trace amounts of 1,4-dioxane, a potential contaminant. Reputable brands purify to remove it.
Not for all formulations
It works best in rinse-off products; in leave-on formulas, it may feel slightly tacky for some users.
Best for
- People with normal to sensitive skin
- Those looking for a gentle daily cleanser
Use caution if
- Individuals with known allergies to ethoxylated ingredients (rare)
Usage tips
Safety summary
Laureth-11 is considered safe for cosmetic use at typical concentrations. The main concern is potential trace contamination with 1,4-dioxane, which is minimized through purification. Overall, it has a low irritation and comedogenic risk.
Research notes
Studies show laureth-type surfactants are milder than sodium lauryl sulfate. The Cosmetic Ingredient Review (CIR) panel has evaluated similar laureth ingredients and found them safe when formulated properly. No significant human health risks have been identified.
Common label clues
- Typical concentration
- 1–5% in rinse-off products; lower in leave-on formulas
- Regulatory status
- Approved for use in cosmetics by the FDA and the European Commission, with concentration limits in some leave-on products.
- Common uses
- Cleansers, Shampoos, Body washes, Emulsions
- Environmental note
- Derived from plant-based lauryl alcohol, but the ethoxylation process uses ethylene oxide from fossil fuels. Biodegradability is moderate.
Good to know
- Laureth-11 is often used in 'sulfate-free' cleansers as a gentler alternative.
- The number '11' refers to the average number of ethylene oxide units, which affects its water solubility and mildness.
Common questions
What is Laureth-11 in beauty products?
Laureth-11 is a mild cleansing ingredient that helps water and oil mix together in products like cleansers and shampoos. It removes dirt and excess oil without being harsh, so your skin doesn't feel tight or dry after washing. Think of it as a gentle helper that lifts away grime while keeping your skin's natural moisture barrier intact.
What does Laureth-11 do in a beauty product?
In a cosmetic product, Laureth-11 reduces the surface tension between water and oil, allowing them to blend into a stable mixture. When you rinse, it helps lift dirt, oil, and makeup from your skin so they wash away easily. Its mild nature means it cleans without disrupting the skin's protective barrier as much as stronger surfactants like sodium lauryl sulfate.
Is Laureth-11 safe for most people?
Laureth-11 is considered safe for cosmetic use at typical concentrations. The main concern is potential trace contamination with 1,4-dioxane, which is minimized through purification. Overall, it has a low irritation and comedogenic risk.
Who should be careful with Laureth-11?
Individuals with known allergies to ethoxylated ingredients (rare)
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.