Ingredient review
C14-15 Pareth-12
INCI: C14-15 PARETH-12
A gentle synthetic surfactant that helps cleansers foam and rinse cleanly, with low irritation potential.
In plain English
C14-15 Pareth-12 is a man-made ingredient that helps oil and water mix together in products like cleansers and shampoos. It creates a nice foam and helps rinse away dirt without leaving a greasy film. It's considered very gentle on skin and is often used in mild formulas.
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-12 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-12.
- 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
A synthetic surfactant (cleansing agent) made from a fatty alcohol chain (C14-15) reacted with ethylene oxide (12 units). It belongs to the 'pareth' family of non-ionic surfactants.
How it works
It lowers the surface tension between oil and water, allowing them to blend into a stable emulsion. In cleansers, it helps lift dirt and oil from the skin so they can be rinsed away. Its non-ionic nature makes it less likely to strip the skin's natural moisture barrier.
Pros
Mild on skin
Non-ionic surfactants like this one are known for being gentle and less likely to cause dryness or irritation compared to harsher cleansers.
Good foam and rinse
It produces a satisfying lather and rinses cleanly, leaving skin feeling fresh without a tight or stripped sensation.
Cons and cautions
Synthetic origin
It is made from petrochemicals, which may be a turn-off for those seeking natural or plant-based alternatives.
Potential trace impurity
The manufacturing process can create trace amounts of 1,4-dioxane, a possible carcinogen, though reputable brands purify to safe levels.
Best for
- People with normal to combination skin looking for a gentle cleanser
- Anyone who prefers mild, low-irritation surfactants
Use caution if
- Those who strictly avoid synthetic or ethoxylated ingredients
Usage tips
Safety summary
C14-15 Pareth-12 is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential. The main concern is the potential for trace 1,4-dioxane, but reputable manufacturers purify their ingredients to meet safety standards.
Research notes
The Cosmetic Ingredient Review (CIR) panel has evaluated pareth-type surfactants and concluded they are safe in cosmetic formulations. Studies show low skin irritation and sensitization potential. No significant human health risks have been identified at current usage levels.
Common label clues
- Typical concentration
- 1–5%
- Regulatory status
- Approved for use in cosmetics in the US (FDA), EU (CosIng), and many other regions. The CIR panel has reviewed it and found it safe as used.
- Common uses
- Cleansers, Shampoos, Body washes, Lotions
- Environmental note
- As a synthetic surfactant, it may not be readily biodegradable in all conditions, but many modern formulations are designed with environmental impact in mind.
Good to know
- C14-15 Pareth-12 is considered safe by the Cosmetic Ingredient Review (CIR) panel at typical use levels.
- It is often used in 'sulfate-free' cleansers as a gentler alternative to sodium lauryl sulfate.
Common questions
What is C14-15 Pareth-12 in beauty products?
C14-15 Pareth-12 is a man-made ingredient that helps oil and water mix together in products like cleansers and shampoos. It creates a nice foam and helps rinse away dirt without leaving a greasy film. It's considered very gentle on skin and is often used in mild formulas.
What does C14-15 Pareth-12 do in a beauty product?
It lowers the surface tension between oil and water, allowing them to blend into a stable emulsion. In cleansers, it helps lift dirt and oil from the skin so they can be rinsed away. Its non-ionic nature makes it less likely to strip the skin's natural moisture barrier.
Is C14-15 Pareth-12 safe for most people?
C14-15 Pareth-12 is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential. The main concern is the potential for trace 1,4-dioxane, but reputable manufacturers purify their ingredients to meet safety standards.
Who should be careful with C14-15 Pareth-12?
Those who strictly avoid synthetic or ethoxylated ingredients
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.