Ingredient review

TEA-C10-15 Alkyl Sulfate

INCI: TEA-C10-15 Alkyl Sulfate

An effective but potentially drying cleanser that works well for oily skin but may irritate sensitive or dry skin.

beautyskincaresurfactant

In plain English

TEA-C10-15 Alkyl Sulfate is a synthetic cleansing ingredient that helps water mix with oil and dirt so they can be rinsed away. It creates a rich lather and is often used in shampoos and body washes. Because it can strip natural oils, it may leave skin feeling tight or dry, especially for those with sensitive or dry 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.

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

TEA-C10-15 Alkyl 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 TEA-C10-15 Alkyl 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 a blend of fatty alcohols (C10-15) neutralized with triethanolamine (TEA). It belongs to the alkyl sulfate family, similar to sodium lauryl sulfate but with a slightly milder profile due to the TEA counterion.

How it works

It reduces the surface tension between water and oil, allowing oils and dirt on the skin to be emulsified and washed away. Its cleansing action is strong, which can be beneficial for removing excess sebum but may also disrupt the skin's natural moisture barrier.

Pros

Strong cleanser

Effectively removes excess oil, makeup, and impurities, leaving skin feeling clean.

Good lather

Produces a satisfying foam that many people associate with a thorough cleanse.

Cons and cautions

Can be drying

May strip the skin of its natural oils, leading to tightness, flakiness, or irritation over time.

Potential irritant

Moderate irritation risk, especially for those with sensitive skin or conditions like rosacea.

Best for

  • People with oily or combination skin
  • Those who prefer a foamy, deep-cleansing wash

Use caution if

  • Individuals with dry, sensitive, or eczema-prone skin
  • Anyone with a compromised skin barrier

Usage tips

Use only on wet skin and rinse thoroughly to minimize residue.
Follow with a moisturizer to replenish hydration after cleansing.
Consider using only in the evening if your skin feels dry after morning use.

Safety summary

Generally safe for rinse-off use in cosmetics, but may cause dryness or irritation for sensitive individuals. Avoid prolonged contact with eyes and broken skin.

Research notes

Studies on alkyl sulfates indicate that shorter-chain variants (like SLS) are more irritating. TEA-C10-15 Alkyl Sulfate is considered milder but still carries a moderate irritation risk, especially with frequent use.

Common label clues

Typical concentration
Typically 5–15% in rinse-off products
Regulatory status
Approved for use in cosmetics in the US (FDA) and EU (CosIng) within concentration limits. The Cosmetic Ingredient Review (CIR) has evaluated similar alkyl sulfates and found them safe for rinse-off use at typical concentrations.
Common uses
Facial cleansers, Body washes, Shampoos, Shower gels
Environmental note
As a synthetic surfactant, it may have moderate biodegradability. Some concerns exist about aquatic toxicity, but it is generally considered safe for the environment at typical use levels.

Good to know

  • TEA-C10-15 Alkyl Sulfate is often found in products labeled 'sulfate-free'? No — it is a sulfate and may still be drying.
  • The 'C10-15' refers to the carbon chain length of the fatty alcohols used, which influences its cleansing strength.

Common questions

What is TEA-C10-15 Alkyl Sulfate in beauty products?

TEA-C10-15 Alkyl Sulfate is a synthetic cleansing ingredient that helps water mix with oil and dirt so they can be rinsed away. It creates a rich lather and is often used in shampoos and body washes. Because it can strip natural oils, it may leave skin feeling tight or dry, especially for those with sensitive or dry skin.

What does TEA-C10-15 Alkyl Sulfate do in a beauty product?

It reduces the surface tension between water and oil, allowing oils and dirt on the skin to be emulsified and washed away. Its cleansing action is strong, which can be beneficial for removing excess sebum but may also disrupt the skin's natural moisture barrier.

Is TEA-C10-15 Alkyl Sulfate safe for most people?

Generally safe for rinse-off use in cosmetics, but may cause dryness or irritation for sensitive individuals. Avoid prolonged contact with eyes and broken skin.

Who should be careful with TEA-C10-15 Alkyl Sulfate?

Individuals with dry, sensitive, or eczema-prone skin Anyone with a compromised skin barrier

Research sources

Cosmetic Ingredient Review (CIR) – Safety Assessment of Alkyl SulfatesOpenFDA – Cosmetic Ingredient DirectoryOpenPubChem – TEA-C10-15 Alkyl 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.