Ingredient review
C14-15 Pareth-8
INCI: C14-15 PARETH-8
A mild synthetic emulsifier that helps cleansers foam and rinse cleanly without stripping the skin.
In plain English
C14-15 Pareth-8 is a man-made ingredient that helps water and oil mix together in products like face washes and shampoos. It creates a gentle foam and helps rinse away dirt and makeup without leaving a greasy film. It is considered very mild and is often used in formulas for sensitive 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.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
C14-15 Pareth-8 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 C14-15 Pareth-8.
- 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
C14-15 Pareth-8 is a synthetic ethoxylated alcohol, meaning it is made by reacting a fatty alcohol (C14-15) with ethylene oxide. It belongs to a family of mild surfactants and emulsifiers commonly used in personal care products.
How it works
It works by reducing the surface tension between oil and water, allowing them to blend into a stable mixture. In cleansers, it helps lift dirt and oil from the skin and allows them to be rinsed away easily. Its mildness comes from its large molecular structure, which is less likely to penetrate the skin barrier.
Pros
Very mild on skin
C14-15 Pareth-8 is known for being one of the gentlest synthetic surfactants, making it suitable for daily use even on sensitive or dry skin.
Excellent emulsifier
It helps oil and water mix smoothly, so your cleanser feels consistent and rinses off cleanly without residue.
Cons and cautions
Synthetic origin
It is made from petrochemicals, which may be a concern for those seeking natural or plant-based ingredients.
Potential for slight dryness at high levels
In very high concentrations, it could still strip some natural oils, though it is much milder than traditional sulfates.
Best for
- People with normal to dry skin looking for a gentle cleanser
- Those who prefer mild, sulfate-free surfactants
Use caution if
- Individuals with known sensitivity to ethoxylated ingredients (rare)
- Those seeking 100% natural or organic formulations
Usage tips
Safety summary
C14-15 Pareth-8 is considered safe for use in cosmetics at typical concentrations. It is non-irritating and non-sensitizing for most people. As with any ingredient, patch testing is recommended for those with very sensitive skin.
Research notes
Research on ethoxylated alcohols like C14-15 Pareth-8 indicates low acute toxicity and low skin irritation potential. The CIR panel has reviewed similar ingredients and concluded they are safe in cosmetic formulations.
Common label clues
- Typical concentration
- 1% to 10% in rinse-off products; lower in leave-on products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. The Cosmetic Ingredient Review (CIR) panel has evaluated similar ethoxylated alcohols and found them safe as used.
- Common uses
- Cleansers, Shampoos, Body washes, Facial washes, Makeup removers
- Environmental note
- As a synthetic ethoxylate, it may not be readily biodegradable in all conditions. However, it is generally considered less environmentally persistent than some older surfactants.
Good to know
- C14-15 Pareth-8 is part of a larger family of 'pareth' surfactants, which are all considered mild.
- It is often used in baby shampoos and sensitive-skin formulas.
Common questions
What is C14-15 Pareth-8 in beauty products?
C14-15 Pareth-8 is a man-made ingredient that helps water and oil mix together in products like face washes and shampoos. It creates a gentle foam and helps rinse away dirt and makeup without leaving a greasy film. It is considered very mild and is often used in formulas for sensitive skin.
What does C14-15 Pareth-8 do in a beauty product?
It works by reducing the surface tension between oil and water, allowing them to blend into a stable mixture. In cleansers, it helps lift dirt and oil from the skin and allows them to be rinsed away easily. Its mildness comes from its large molecular structure, which is less likely to penetrate the skin barrier.
Is C14-15 Pareth-8 safe for most people?
C14-15 Pareth-8 is considered safe for use in cosmetics at typical concentrations. It is non-irritating and non-sensitizing for most people. As with any ingredient, patch testing is recommended for those with very sensitive skin.
Who should be careful with C14-15 Pareth-8?
Individuals with known sensitivity to ethoxylated ingredients (rare) Those seeking 100% natural or organic formulations
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.