Ingredient review
Sodium/TEA-Lauroyl Hydrolyzed Keratin
INCI: SODIUM/TEA-LAUROYL HYDROLYZED KERATIN
A mild, protein-derived surfactant that cleanses without stripping and helps strengthen hair.
In plain English
This ingredient is a gentle cleanser made from keratin, the protein that naturally makes up your hair and nails. It's modified with a fatty acid (lauric acid) to help it foam and clean, while still being kind to your hair and scalp. Unlike harsh detergents, it leaves hair feeling soft and less frizzy.
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
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Sodium/TEA-Lauroyl Hydrolyzed Keratin 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 Sodium/TEA-Lauroyl Hydrolyzed Keratin.
- 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 semi-synthetic surfactant created by attaching lauric acid (from coconut or palm oil) to hydrolyzed keratin (broken-down protein from wool or feathers). The result is a molecule that can both clean and condition.
How it works
In a product, it reduces surface tension so water can mix with oils and dirt, allowing them to be rinsed away. The keratin part binds to the hair shaft, depositing a thin protein layer that helps smooth the cuticle and reduce breakage.
Pros
Mild on scalp
Unlike sodium lauryl sulfate, this ingredient is much less likely to cause irritation or dryness, making it suitable for sensitive scalps.
Strengthens hair
The keratin component deposits protein onto the hair shaft, which can help reduce breakage and improve elasticity over time.
Cons and cautions
Not vegan
Keratin is typically derived from animal sources like wool or feathers, so this ingredient is not suitable for vegan or cruelty-free routines.
Potential buildup
Frequent use without a clarifying shampoo may lead to protein buildup, making hair feel stiff or brittle, especially for low-porosity hair.
Best for
- People with dry, damaged, or color-treated hair
- Those seeking a sulfate-free, gentle cleanser
Use caution if
- Strict vegans or those avoiding animal-derived ingredients
- Individuals with very oily hair who need strong cleansing
Usage tips
Safety summary
Considered safe for topical use in rinse-off products. Low irritation and allergy risk, but those with wool allergies should check the source. Not recommended for ingestion or eye contact.
Research notes
Studies show that hydrolyzed keratin can improve hair strength and moisture retention. As a surfactant, it is milder than traditional sulfates, though direct clinical trials on this specific compound are limited.
Common label clues
- Typical concentration
- 1–10% in rinse-off products
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database. No known restrictions at typical concentrations.
- Common uses
- Shampoos, Conditioners, Hair masks, Body washes
- Environmental note
- Keratin sourcing may involve animal byproducts; look for brands that specify ethical sourcing or use plant-based alternatives if concerned.
Good to know
- This ingredient is often listed as 'Sodium/TEA-Lauroyl Hydrolyzed Keratin' on labels—don't be put off by the long name; it's a gentle cleanser.
- It's commonly found in 'sulfate-free' shampoos marketed for damaged or color-treated hair.
Common questions
What is Sodium/TEA-Lauroyl Hydrolyzed Keratin in beauty products?
This ingredient is a gentle cleanser made from keratin, the protein that naturally makes up your hair and nails. It's modified with a fatty acid (lauric acid) to help it foam and clean, while still being kind to your hair and scalp. Unlike harsh detergents, it leaves hair feeling soft and less frizzy.
What does Sodium/TEA-Lauroyl Hydrolyzed Keratin do in a beauty product?
In a product, it reduces surface tension so water can mix with oils and dirt, allowing them to be rinsed away. The keratin part binds to the hair shaft, depositing a thin protein layer that helps smooth the cuticle and reduce breakage.
Is Sodium/TEA-Lauroyl Hydrolyzed Keratin safe for most people?
Considered safe for topical use in rinse-off products. Low irritation and allergy risk, but those with wool allergies should check the source. Not recommended for ingestion or eye contact.
Who should be careful with Sodium/TEA-Lauroyl Hydrolyzed Keratin?
Strict vegans or those avoiding animal-derived ingredients Individuals with very oily hair who need strong cleansing
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.