Ingredient review
TEA C14-17 Alkyl Sec Sulfonate
INCI: TEA C14-17 ALKYL SEC SULFONATE
A gentle, effective cleanser that removes dirt and oil without stripping the skin, but may not suit ultra-sensitive scalps.
In plain English
This ingredient is a type of soap-like molecule that helps water mix with oil and dirt so they can be rinsed away. It is considered milder than traditional sulfates like SLS, making it a popular choice for gentle cleansers and shampoos.
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
TEA C14-17 Alkyl Sec Sulfonate 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 TEA C14-17 Alkyl Sec Sulfonate.
- 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 derived from petroleum, chemically modified to be water-soluble and mild on skin.
How it works
It lowers the surface tension of water, allowing it to trap oils and debris and lift them away from the skin or hair during rinsing.
Pros
Gentle on skin
Compared to sodium lauryl sulfate, this surfactant is less likely to cause tightness or irritation after washing.
Good foam quality
It produces a creamy, stable lather that many users find satisfying in cleansers and shampoos.
Cons and cautions
Synthetic origin
It is not derived from natural sources, which may be a drawback for those preferring plant-based ingredients.
Potential for mild irritation
While generally gentle, it can still cause slight stinging or redness on very sensitive or eczema-prone skin.
Best for
- People with normal to combination skin
- Those seeking a sulfate-free but still foaming cleanser
Use caution if
- Individuals with known sensitivity to sulfonates
- Those with severely damaged skin barrier
Usage tips
Safety summary
Considered safe for use in rinse-off cosmetics at typical concentrations. Rare reports of mild irritation exist, but it is generally well-tolerated.
Research notes
Studies show it is less irritating than sodium lauryl sulfate and comparable to other mild surfactants like cocamidopropyl betaine. Long-term safety data is limited but positive.
Common label clues
- Typical concentration
- 1–15% in rinse-off formulas
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions at concentrations up to 15% in rinse-off products.
- Common uses
- Facial cleansers, Body washes, Shampoos, Shower gels
- Environmental note
- It is biodegradable, but its production relies on petrochemicals, which have a higher carbon footprint than some plant-derived alternatives.
Good to know
- This ingredient is often listed as part of a 'sulfate-free' system, but it is still a synthetic surfactant.
- It is biodegradable and commonly used in eco-friendly formulations.
Common questions
What is TEA C14-17 Alkyl Sec Sulfonate in beauty products?
This ingredient is a type of soap-like molecule that helps water mix with oil and dirt so they can be rinsed away. It is considered milder than traditional sulfates like SLS, making it a popular choice for gentle cleansers and shampoos.
What does TEA C14-17 Alkyl Sec Sulfonate do in a beauty product?
It lowers the surface tension of water, allowing it to trap oils and debris and lift them away from the skin or hair during rinsing.
Is TEA C14-17 Alkyl Sec Sulfonate safe for most people?
Considered safe for use in rinse-off cosmetics at typical concentrations. Rare reports of mild irritation exist, but it is generally well-tolerated.
Who should be careful with TEA C14-17 Alkyl Sec Sulfonate?
Individuals with known sensitivity to sulfonates Those with severely damaged skin barrier
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.