Ingredient review
TEA-Undecylenoyl Hydrolyzed Collagen
INCI: TEA-Undecylenoyl Hydrolyzed Collagen
A gentle, semi-synthetic ingredient that helps condition skin and may offer mild antimicrobial support, but its collagen benefits are limited to surface-level hydration.
In plain English
This ingredient is a modified form of collagen, a protein naturally found in skin, that has been chemically linked to undecylenic acid (a fatty acid from castor oil). In skincare, it acts as a conditioning agent, helping to soften and smooth the skin's surface. It also has mild antimicrobial properties, which can be useful in cleansers to help control bacteria. However, it does not replace lost collagen in the skin or provide anti-aging benefits beyond temporary hydration.
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
TEA-Undecylenoyl Hydrolyzed Collagen 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 TEA-Undecylenoyl Hydrolyzed Collagen.
- 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 compound created by combining hydrolyzed collagen (collagen broken into smaller peptides) with undecylenic acid, then neutralizing it with triethanolamine (TEA) to make it water-soluble and gentle on skin.
How it works
When applied, the collagen peptides form a thin film on the skin's surface, helping to retain moisture and reduce water loss. The undecylenic acid portion provides mild antimicrobial activity, which can help reduce the growth of certain bacteria and fungi on the skin. This makes it useful in cleansers and leave-on products for maintaining skin barrier health.
Pros
Surface hydration
Helps skin feel softer and smoother by forming a moisture-retaining film, which can reduce dryness and flakiness.
Mild antimicrobial action
The undecylenic acid component can help control bacteria and fungi on the skin, making it useful in cleansers for acne-prone or sensitive skin.
Cons and cautions
No collagen replacement
Despite its name, this ingredient does not replace lost collagen in the skin or provide anti-aging benefits beyond temporary surface hydration.
Potential for mild irritation
Although generally gentle, the TEA component may cause mild irritation in very sensitive individuals, especially with prolonged use.
Best for
- Those with normal to dry skin seeking extra hydration
- People looking for a gentle conditioning agent in cleansers
Use caution if
- Individuals with known allergies to collagen or undecylenic acid
- Those seeking proven anti-aging collagen-boosting ingredients
Usage tips
Safety summary
Generally considered safe for topical use in cosmetics at concentrations up to 2%. The TEA component is bound and poses low risk, but those with sensitive skin should patch test. Not recommended for oral or internal use.
Research notes
Studies on undecylenic acid confirm its antimicrobial and antifungal properties. Collagen peptides are known for surface hydration but lack evidence for deep skin repair. Combined, this ingredient offers mild conditioning benefits with a good safety profile.
Common label clues
- Typical concentration
- 0.5% to 2%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. The CIR Expert Panel has reviewed similar collagen derivatives and found them safe at typical use levels.
- Common uses
- Cleansers, Shampoos, Body washes, Leave-on treatments
- Environmental note
- The collagen source is typically animal-derived (bovine or marine), which may not be suitable for vegans. Undecylenic acid is plant-derived from castor oil.
Good to know
- TEA (triethanolamine) is a pH adjuster and can be irritating in high amounts, but in this ingredient it is chemically bound and generally safe.
- Undecylenic acid is derived from castor oil and is known for its antifungal properties, often used in athlete's foot treatments.
Common questions
What is TEA-Undecylenoyl Hydrolyzed Collagen in beauty products?
This ingredient is a modified form of collagen, a protein naturally found in skin, that has been chemically linked to undecylenic acid (a fatty acid from castor oil). In skincare, it acts as a conditioning agent, helping to soften and smooth the skin's surface. It also has mild antimicrobial properties, which can be useful in cleansers to help control bacteria. However, it does not replace lost collagen in the skin or provide anti-aging benefits beyond temporary hydration.
What does TEA-Undecylenoyl Hydrolyzed Collagen do in a beauty product?
When applied, the collagen peptides form a thin film on the skin's surface, helping to retain moisture and reduce water loss. The undecylenic acid portion provides mild antimicrobial activity, which can help reduce the growth of certain bacteria and fungi on the skin. This makes it useful in cleansers and leave-on products for maintaining skin barrier health.
Is TEA-Undecylenoyl Hydrolyzed Collagen safe for most people?
Generally considered safe for topical use in cosmetics at concentrations up to 2%. The TEA component is bound and poses low risk, but those with sensitive skin should patch test. Not recommended for oral or internal use.
Who should be careful with TEA-Undecylenoyl Hydrolyzed Collagen?
Individuals with known allergies to collagen or undecylenic acid Those seeking proven anti-aging collagen-boosting ingredients
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.