Ingredient review
Laureth-15
INCI: Laureth-15
Laureth-15 is a synthetic emulsifier that helps products spread and foam, but it may cause mild irritation for sensitive skin.
In plain English
Laureth-15 is a man-made ingredient that helps oil and water mix together in products like cleansers and shampoos. It also creates foam and helps the product spread easily. While it's effective, it can be a bit drying or irritating for people with very sensitive or dry skin.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Main practical flags: irritation is moderate; clogging risk is low.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Laureth-15 can be useful, but watch for some irritation potential.
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-15.
- 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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
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-15 is a synthetic surfactant (a type of detergent) made from lauryl alcohol and ethylene oxide. It belongs to the laureth family of emulsifiers and is used to stabilize mixtures of oil and water.
How it works
In a cosmetic product, Laureth-15 reduces the surface tension between oil and water, allowing them to blend into a stable emulsion. It also helps create foam and lift dirt and oil from the skin or hair so they can be rinsed away.
Pros
Effective emulsifier
Laureth-15 helps oil and water mix smoothly, giving products a consistent, pleasant texture that doesn't separate.
Good foaming action
It produces a rich lather that many people associate with a satisfying cleansing experience, especially in shampoos and body washes.
Cons and cautions
Potential irritation
For those with sensitive or dry skin, Laureth-15 can strip natural oils and cause tightness, redness, or mild irritation.
Not natural
As a synthetic ingredient, it may not be preferred by consumers seeking plant-based or naturally derived alternatives.
Best for
- People with normal to oily skin who enjoy a foamy cleanser
- Those using rinse-off products like body wash or shampoo
Use caution if
- Individuals with very dry, sensitive, or compromised skin barriers
Usage tips
Safety summary
Laureth-15 is considered safe for use in cosmetics at typical concentrations, but it can cause mild irritation in sensitive individuals. It is best suited for rinse-off products to minimize skin exposure.
Research notes
Research on laureth compounds generally supports their safety in rinse-off cosmetics. The CIR panel has reviewed similar laureth ingredients and found them safe when formulated to avoid irritation. Specific studies on Laureth-15 are limited, but it is grouped with the broader laureth family.
Common label clues
- Typical concentration
- 1–5% in rinse-off products; lower in leave-on formulations
- Regulatory status
- Approved for use in cosmetics in the US and EU within concentration limits. The Cosmetic Ingredient Review (CIR) panel has evaluated laureth compounds and found them safe as used in rinse-off products.
- Common uses
- Cleansers, Shampoos, Body washes, Emulsions
- Environmental note
- As a synthetic surfactant, Laureth-15 may not be readily biodegradable. Consumers concerned about environmental impact may prefer plant-based alternatives.
Good to know
- Laureth-15 is part of a larger family of laureth compounds, which vary by the number of ethylene oxide units (the number after 'laureth').
- It is often found in combination with other mild surfactants to reduce irritation potential.
Common questions
What is Laureth-15 in beauty products?
Laureth-15 is a man-made ingredient that helps oil and water mix together in products like cleansers and shampoos. It also creates foam and helps the product spread easily. While it's effective, it can be a bit drying or irritating for people with very sensitive or dry skin.
What does Laureth-15 do in a beauty product?
In a cosmetic product, Laureth-15 reduces the surface tension between oil and water, allowing them to blend into a stable emulsion. It also helps create foam and lift dirt and oil from the skin or hair so they can be rinsed away.
Is Laureth-15 safe for most people?
Laureth-15 is considered safe for use in cosmetics at typical concentrations, but it can cause mild irritation in sensitive individuals. It is best suited for rinse-off products to minimize skin exposure.
Who should be careful with Laureth-15?
Individuals with very dry, sensitive, or compromised skin barriers
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.