Ingredient review

Sodium/TEA C12-13 Pareth-3 Sulfate

INCI: SODIUM/TEA C12-13 PARETH-3 SULFATE

A moderate-strength surfactant that cleans effectively but may be drying for sensitive skin.

beautyskincarecleanser

In plain English

This is a cleansing ingredient that helps water mix with oil and dirt so they can be rinsed away. It creates foam and is often used in shampoos and body washes. It is milder than some traditional sulfates but can still strip natural oils if used too frequently.

Review score

Safety, usefulness, and evidence

3.8Good
3.8/ 5

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
How reviews are scored

Quick decision guide

Useful, but context matters

Sodium/TEA C12-13 Pareth-3 Sulfate 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Sodium/TEA C12-13 Pareth-3 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

moderate

Can bother some users, especially with frequent use, damaged skin, or strong companion ingredients.

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

A synthetic surfactant made from fatty alcohols and ethylene oxide, then sulfated and neutralized with sodium or TEA (triethanolamine) salts. It is a modified version of sodium laureth sulfate with a specific carbon chain length (C12-13) and three ethoxylate units.

How it works

It reduces the surface tension between water and oil, allowing dirt and sebum to be emulsified and washed away. The ethoxylate groups make it less harsh than non-ethoxylated sulfates, providing a gentler cleanse.

Pros

Effective cleanser

Removes excess oil, makeup, and environmental debris without requiring harsh scrubbing.

Milder than SLS

The ethoxylation and specific chain length reduce irritation compared to standard sodium lauryl sulfate.

Cons and cautions

Potential drying effect

Frequent use can strip the skin's natural moisture barrier, leading to tightness or flakiness.

Contaminant concern

The manufacturing process may leave trace amounts of 1,4-dioxane, though levels are typically low in well-purified ingredients.

Best for

  • People with normal to oily skin
  • Those who prefer foaming cleansers

Use caution if

  • Individuals with very dry or compromised skin
  • Those with known sensitivity to sulfates

Usage tips

Use in rinse-off products only; avoid leaving on skin for extended periods.
Follow with a moisturizer to replenish hydration after cleansing.
If you have sensitive skin, patch test before full use.

Safety summary

Generally safe for occasional use in rinse-off products. The main risks are dryness and irritation for sensitive individuals. Trace 1,4-dioxane is a concern but is regulated in many markets.

Research notes

Studies show that ethoxylated sulfates are less irritating than non-ethoxylated versions. The Cosmetic Ingredient Review (CIR) panel has deemed similar ingredients safe when formulated to avoid contamination.

Common label clues

Typical concentration
1–15% in rinse-off products
Regulatory status
Approved for use in cosmetics in the EU, US, and many other regions. The EU restricts 1,4-dioxane to trace levels (≤10 ppm) in finished products.
Common uses
Shampoos, Body washes, Facial cleansers, Shower gels
Environmental note
As a synthetic surfactant, it may have moderate biodegradability. Some concerns exist about ethoxylated compounds in aquatic environments, but it is not classified as a persistent pollutant.

Good to know

  • This ingredient is often listed near the top of ingredient lists in shampoos and body washes.
  • It is considered a 'secondary surfactant' in many formulations, paired with milder cleansers to reduce irritation.

Common questions

What is Sodium/TEA C12-13 Pareth-3 Sulfate in beauty products?

This is a cleansing ingredient that helps water mix with oil and dirt so they can be rinsed away. It creates foam and is often used in shampoos and body washes. It is milder than some traditional sulfates but can still strip natural oils if used too frequently.

What does Sodium/TEA C12-13 Pareth-3 Sulfate do in a beauty product?

It reduces the surface tension between water and oil, allowing dirt and sebum to be emulsified and washed away. The ethoxylate groups make it less harsh than non-ethoxylated sulfates, providing a gentler cleanse.

Is Sodium/TEA C12-13 Pareth-3 Sulfate safe for most people?

Generally safe for occasional use in rinse-off products. The main risks are dryness and irritation for sensitive individuals. Trace 1,4-dioxane is a concern but is regulated in many markets.

Who should be careful with Sodium/TEA C12-13 Pareth-3 Sulfate?

Individuals with very dry or compromised skin Those with known sensitivity to sulfates

Research sources

Cosmetic Ingredient Review (CIR) - Safety Assessment of Alkyl SulfatesOpenPubMed - Surfactant irritation potentialOpenEuropean Chemicals Agency (ECHA) - 1,4-Dioxane informationOpen

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.