Ingredient review

TEA-Lauroyl Sarcosinate

INCI: TEA-Lauroyl Sarcosinate

A gentle, amino-acid-based surfactant that cleanses without stripping the skin's natural moisture barrier.

beautyskincarecleanser

In plain English

TEA-Lauroyl Sarcosinate is a mild cleansing ingredient made from sarcosine (an amino acid naturally found in the body) and lauric acid (from coconut or palm oil). It helps lift dirt, oil, and makeup from your skin and hair without being harsh or drying. Unlike traditional soaps that can leave your skin feeling tight, this surfactant is known for being gentle and is often used in products for sensitive skin.

Review score

Safety, usefulness, and evidence

4.0Good
4.0/ 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
semi synthetic
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

TEA-Lauroyl Sarcosinate 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-Lauroyl Sarcosinate.
  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

A semi-synthetic surfactant created by combining lauric acid (a fatty acid from coconut or palm oil) with sarcosine (an amino acid), then neutralizing it with triethanolamine (TEA). It belongs to the sarcosinate family of mild cleansers.

How it works

It reduces the surface tension between water and oil, allowing water to mix with and rinse away sebum, dirt, and makeup. Its molecular structure is large and gentle, so it cleans effectively without penetrating deeply into the skin or stripping away essential lipids.

Pros

Gentle on skin

Its large molecular size means it cleans without penetrating the skin barrier, reducing the risk of irritation and dryness.

Good lather

Creates a rich, creamy foam that feels luxurious and helps spread the product evenly, making cleansing feel effective and pleasant.

Cons and cautions

Potential for mild dryness

While gentle, overuse or use on already compromised skin can still lead to slight tightness or dryness, especially in cold, dry climates.

Sustainability concerns

Lauric acid is often sourced from palm or coconut oil, which can be linked to deforestation and habitat loss unless certified sustainable.

Best for

  • People with normal to combination skin looking for a gentle daily cleanser
  • Those with sensitive skin who react to harsher sulfates like SLS

Use caution if

  • Individuals with severely dry or eczema-prone skin may prefer a non-foaming, cream-based cleanser

Usage tips

Use lukewarm water to activate the lather and avoid stripping natural oils.
Follow with a moisturizer to lock in hydration after cleansing.
If your skin feels tight after use, reduce frequency or switch to a non-foaming cleanser.

Safety summary

TEA-Lauroyl Sarcosinate is considered safe for use in rinse-off cosmetics at typical concentrations. It has low irritation and sensitization potential. However, the TEA component can form nitrosamines if combined with nitrosating agents, but this is avoided in well-formulated products. Overall, it is a well-tolerated, mild surfactant.

Research notes

Studies on sarcosinate surfactants show they are less irritating than sodium lauryl sulfate (SLS) and comparable to other mild surfactants like cocamidopropyl betaine. Most safety data comes from industry-sponsored reviews and the CIR panel, which supports its safe use in cosmetics.

Common label clues

Typical concentration
1–10% in rinse-off products
Regulatory status
Approved for use in cosmetics in the EU, US, and other major markets. The Cosmetic Ingredient Review (CIR) panel has deemed sarcosinates safe as used in rinse-off products.
Common uses
Facial cleansers, Shampoos, Body washes, Makeup removers
Environmental note
Sarcosinates are generally biodegradable, but the sourcing of lauric acid from palm oil may contribute to environmental concerns unless certified by RSPO or similar.

Good to know

  • Sarcosinates are considered biodegradable and are often used in 'sulfate-free' formulations.
  • TEA-Lauroyl Sarcosinate is pH-compatible with skin (around 5.5–6.5) when properly formulated.

Common questions

What is TEA-Lauroyl Sarcosinate in beauty products?

TEA-Lauroyl Sarcosinate is a mild cleansing ingredient made from sarcosine (an amino acid naturally found in the body) and lauric acid (from coconut or palm oil). It helps lift dirt, oil, and makeup from your skin and hair without being harsh or drying. Unlike traditional soaps that can leave your skin feeling tight, this surfactant is known for being gentle and is often used in products for sensitive skin.

What does TEA-Lauroyl Sarcosinate do in a beauty product?

It reduces the surface tension between water and oil, allowing water to mix with and rinse away sebum, dirt, and makeup. Its molecular structure is large and gentle, so it cleans effectively without penetrating deeply into the skin or stripping away essential lipids.

Is TEA-Lauroyl Sarcosinate safe for most people?

TEA-Lauroyl Sarcosinate is considered safe for use in rinse-off cosmetics at typical concentrations. It has low irritation and sensitization potential. However, the TEA component can form nitrosamines if combined with nitrosating agents, but this is avoided in well-formulated products. Overall, it is a well-tolerated, mild surfactant.

Who should be careful with TEA-Lauroyl Sarcosinate?

Individuals with severely dry or eczema-prone skin may prefer a non-foaming, cream-based cleanser

Research sources

Cosmetic Ingredient Review – Safety Assessment of SarcosinatesOpenPubChem – TEA-Lauroyl SarcosinateOpenEnvironmental Working Group – Ingredient ProfileOpen

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.