Ingredient review

TEA-C11-15 Pareth Sulfate

INCI: TEA-C11-15 PARETH SULFATE

A gentle cleansing agent that effectively removes dirt and oil without stripping the skin.

beautyskincarecleanser

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 sodium lauryl sulfate, making it a good choice for sensitive skin.

Review score

Safety, usefulness, and evidence

3.5Good
3.5/ 5

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
How reviews are scored

Quick decision guide

Useful, but context matters

TEA-C11-15 Pareth Sulfate 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging TEA-C11-15 Pareth Sulfate.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. 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

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

TEA-C11-15 Pareth Sulfate is a synthetic surfactant derived from fatty alcohols and ethylene oxide, combined with triethanolamine to form a mild cleansing agent.

How it works

It works by reducing the surface tension of water, allowing it to penetrate oils and dirt on the skin. The molecule has a water-loving head and an oil-loving tail, which traps impurities and allows them to be rinsed away.

Pros

Gentle on skin

Compared to harsher sulfates, this ingredient is less likely to cause irritation or strip the skin's natural moisture barrier.

Effective foaming

It produces a satisfying lather that helps distribute the product evenly and makes rinsing feel thorough.

Cons and cautions

Potential for mild dryness

In some individuals, especially those with very dry or sensitive skin, it may still cause slight tightness or dryness after washing.

Synthetic origin

As a lab-created compound, it may not be suitable for consumers seeking entirely natural or organic formulations.

Best for

  • People with normal to combination skin
  • Those looking for a sulfate-free or milder cleanser

Use caution if

  • Individuals with extremely dry or compromised skin barriers
  • Those who prefer exclusively natural ingredients

Usage tips

Use in a rinse-off product and follow with a moisturizer to maintain skin hydration.
If you have sensitive skin, patch test a new cleanser containing this ingredient before full use.

Safety summary

TEA-C11-15 Pareth Sulfate is considered safe for use in rinse-off cosmetics at typical concentrations. It has low irritation and comedogenic potential, though individuals with very sensitive skin should monitor for any reaction.

Research notes

Limited specific studies on this exact compound, but it belongs to a class of surfactants well-studied for mildness and safety. Regulatory bodies like the Cosmetic Ingredient Review have evaluated similar ethoxylated sulfates and found them safe when formulated properly.

Common label clues

Typical concentration
1-10% in rinse-off products
Regulatory status
Approved for use in cosmetics in the US, EU, and many other regions. No specific restrictions beyond general cosmetic safety requirements.
Common uses
Facial cleansers, Body washes, Shampoos, Shower gels
Environmental note
As a synthetic surfactant, its biodegradability varies. Some formulations may be less eco-friendly than plant-based alternatives.

Good to know

  • This ingredient is often found in 'sulfate-free' formulas because it is milder than sodium lauryl sulfate.
  • It is compatible with a wide range of other cleansing ingredients and thickeners.

Common questions

What is TEA-C11-15 Pareth Sulfate 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 sodium lauryl sulfate, making it a good choice for sensitive skin.

What does TEA-C11-15 Pareth Sulfate do in a beauty product?

It works by reducing the surface tension of water, allowing it to penetrate oils and dirt on the skin. The molecule has a water-loving head and an oil-loving tail, which traps impurities and allows them to be rinsed away.

Is TEA-C11-15 Pareth Sulfate safe for most people?

TEA-C11-15 Pareth Sulfate is considered safe for use in rinse-off cosmetics at typical concentrations. It has low irritation and comedogenic potential, though individuals with very sensitive skin should monitor for any reaction.

Who should be careful with TEA-C11-15 Pareth Sulfate?

Individuals with extremely dry or compromised skin barriers Those who prefer exclusively natural ingredients

Research sources

Cosmetic Ingredient Review (CIR) - Safety of Alkyl SulfatesOpenPubChem - TEA-C11-15 Pareth SulfateOpen

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.