Ingredient review
Laureth-7
INCI: Laureth-7
Laureth-7 is a mild surfactant and emulsifier that helps products spread and rinse cleanly, but it is not a star active ingredient for skin benefits.
In plain English
Laureth-7 is a gentle cleansing ingredient that helps mix oils and water so your cleanser or lotion has a smooth, even texture. It's similar to other 'laureth' ingredients but with a shorter chain, making it less likely to strip your skin's natural moisture barrier. You'll find it in many rinse-off products like face washes and shampoos, where it helps lift dirt and oil without leaving a heavy residue.
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-7 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-7.
- 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-7 is a semi-synthetic surfactant made by reacting lauryl alcohol (from coconut or palm oil) with ethylene oxide. It belongs to the 'laureth' family, where the number (7) indicates the average length of the polyethylene glycol chain. This structure gives it both water-loving and oil-loving properties, making it an effective emulsifier and mild cleansing agent.
How it works
In a cosmetic product, Laureth-7 sits at the boundary between oil and water droplets, reducing surface tension so they can mix into a stable emulsion. As a surfactant, it also helps water spread more easily across the skin, allowing dirt and oil to be rinsed away. Its mildness comes from its relatively short PEG chain, which is less penetrating and less irritating than longer-chain ethoxylates.
Pros
Mild on skin
Laureth-7 is considered a gentle surfactant, making it suitable for daily cleansing without over-drying or irritating the skin barrier.
Effective emulsifier
It helps oil and water blend smoothly, improving the texture and stability of creams, lotions, and cleansers.
Cons and cautions
Potential trace contaminant
As an ethoxylated ingredient, Laureth-7 may contain trace amounts of 1,4-dioxane, a byproduct that some consumers prefer to avoid. Reputable manufacturers purify to low levels.
Not a functional active
Laureth-7 does not provide hydration, antioxidant, or anti-aging benefits—it's purely a formulation aid.
Best for
- People with normal to combination skin looking for a gentle cleanser
- Those who prefer products with a creamy, non-stripping lather
Use caution if
- Individuals with known sensitivity to ethoxylated ingredients
- Anyone seeking a purely natural or organic formulation
Usage tips
Safety summary
Laureth-7 is considered safe for use in cosmetics at typical concentrations. The main safety consideration is the potential presence of 1,4-dioxane, a byproduct of ethoxylation. Reputable manufacturers use purification steps (e.g., vacuum stripping) to keep levels below regulatory limits (typically <10 ppm). The Cosmetic Ingredient Review panel has concluded it is safe as used in rinse-off products.
Research notes
Research on Laureth-7 is limited compared to more common surfactants. Studies focus on its mildness and low irritation potential relative to sodium lauryl sulfate. The primary evidence comes from safety assessments by the Cosmetic Ingredient Review and regulatory bodies, which confirm its safety profile when properly purified.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics by the FDA and the European Commission. The Cosmetic Ingredient Review (CIR) panel has deemed Laureth-7 safe as used in rinse-off products at concentrations up to 5%.
- Common uses
- Cleansers, Shampoos, Body washes, Emulsions
- Environmental note
- Laureth-7 is derived from plant-based lauryl alcohol (coconut or palm oil), but its ethoxylation process is synthetic. It is biodegradable under standard conditions, though the environmental impact of 1,4-dioxane is a concern if not properly treated in wastewater.
Good to know
- The number '7' in Laureth-7 refers to the average number of ethylene oxide units, which influences its water solubility and mildness.
- Laureth-7 is often used in combination with other surfactants to create a balanced cleansing system.
Common questions
What is Laureth-7 in beauty products?
Laureth-7 is a gentle cleansing ingredient that helps mix oils and water so your cleanser or lotion has a smooth, even texture. It's similar to other 'laureth' ingredients but with a shorter chain, making it less likely to strip your skin's natural moisture barrier. You'll find it in many rinse-off products like face washes and shampoos, where it helps lift dirt and oil without leaving a heavy residue.
What does Laureth-7 do in a beauty product?
In a cosmetic product, Laureth-7 sits at the boundary between oil and water droplets, reducing surface tension so they can mix into a stable emulsion. As a surfactant, it also helps water spread more easily across the skin, allowing dirt and oil to be rinsed away. Its mildness comes from its relatively short PEG chain, which is less penetrating and less irritating than longer-chain ethoxylates.
Is Laureth-7 safe for most people?
Laureth-7 is considered safe for use in cosmetics at typical concentrations. The main safety consideration is the potential presence of 1,4-dioxane, a byproduct of ethoxylation. Reputable manufacturers use purification steps (e.g., vacuum stripping) to keep levels below regulatory limits (typically <10 ppm). The Cosmetic Ingredient Review panel has concluded it is safe as used in rinse-off products.
Who should be careful with Laureth-7?
Individuals with known sensitivity to ethoxylated ingredients Anyone seeking a purely natural or organic formulation
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.