Ingredient review
Laureth-6
INCI: Laureth-6
Laureth-6 is a gentle surfactant that helps cleansers foam and rinse cleanly, but it may be too drying for very sensitive or dry skin if used in high concentrations.
In plain English
Laureth-6 is a cleansing ingredient that helps water mix with oil and dirt so they can be rinsed away. It is often used in face washes and shampoos to create a light foam without stripping the skin too harshly. Think of it as a gentle helper that lifts away makeup and grime, but it's not as mild as some modern alternatives like coco-glucoside.
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-6 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-6.
- 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-6 is a semi-synthetic surfactant made by reacting lauryl alcohol (from coconut or palm oil) with ethylene oxide. It belongs to the laureth family of emulsifiers and is valued for its ability to reduce surface tension between oil and water.
How it works
In a cosmetic product, Laureth-6 works by surrounding oil droplets and dirt particles, allowing them to be suspended in water and rinsed away. It also helps stabilize emulsions, keeping creams and lotions from separating.
Pros
Gentle foaming
Creates a light, pleasant foam that effectively removes dirt and oil without the harshness of sodium lauryl sulfate.
Good emulsifier
Helps keep oil and water blended in creams and lotions, improving product stability and texture.
Cons and cautions
Potential for dryness
In high concentrations or for very dry skin, it can still strip natural oils, leading to tightness or irritation.
Ethoxylation concerns
The manufacturing process may leave trace impurities like 1,4-dioxane, though reputable brands purify their ingredients to safe levels.
Best for
- People with normal to oily skin looking for a gentle foaming cleanser
- Those who prefer semi-synthetic ingredients over harsher sulfates
Use caution if
- Individuals with very dry or compromised skin barriers
- Anyone seeking a completely natural or sulfate-free label (Laureth-6 is semi-synthetic)
Usage tips
Safety summary
Laureth-6 is considered safe for use in cosmetics at typical concentrations. The main safety consideration is the potential for trace 1,4-dioxane contamination, which is regulated and minimized by responsible manufacturers. It is generally non-irritating and non-comedogenic for most skin types.
Research notes
Studies on laureth-type surfactants indicate they are milder than traditional sulfates but can still cause barrier disruption with prolonged exposure. The Cosmetic Ingredient Review (CIR) panel has evaluated laureth compounds and found them safe as used, with no significant evidence of carcinogenicity or reproductive toxicity.
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 EU CosIng database. Manufacturers are required to keep 1,4-dioxane levels below 10 ppm in the final product.
- Common uses
- Cleansers, Shampoos, Body washes, Emulsions
- Environmental note
- Derived from palm or coconut oil, so sourcing can impact deforestation. Look for RSPO-certified palm or sustainable coconut sources if this is a concern.
Good to know
- Laureth-6 is often listed near the middle or end of an ingredient list, indicating it's used at moderate concentrations.
- It is not the same as sodium laureth sulfate (SLES), which is a stronger surfactant.
Common questions
What is Laureth-6 in beauty products?
Laureth-6 is a cleansing ingredient that helps water mix with oil and dirt so they can be rinsed away. It is often used in face washes and shampoos to create a light foam without stripping the skin too harshly. Think of it as a gentle helper that lifts away makeup and grime, but it's not as mild as some modern alternatives like coco-glucoside.
What does Laureth-6 do in a beauty product?
In a cosmetic product, Laureth-6 works by surrounding oil droplets and dirt particles, allowing them to be suspended in water and rinsed away. It also helps stabilize emulsions, keeping creams and lotions from separating.
Is Laureth-6 safe for most people?
Laureth-6 is considered safe for use in cosmetics at typical concentrations. The main safety consideration is the potential for trace 1,4-dioxane contamination, which is regulated and minimized by responsible manufacturers. It is generally non-irritating and non-comedogenic for most skin types.
Who should be careful with Laureth-6?
Individuals with very dry or compromised skin barriers Anyone seeking a completely natural or sulfate-free label (Laureth-6 is semi-synthetic)
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.