Ingredient review
Cocaminobutyric Acid
INCI: Cocaminobutyric Acid
A gentle, coconut-derived surfactant that cleanses without stripping the skin barrier, suitable for sensitive skin.
In plain English
Cocaminobutyric Acid is a mild cleansing ingredient made from coconut oil and a short-chain fatty acid called butyric acid. It helps remove dirt, oil, and makeup from your skin without leaving it feeling tight or dry. Because it's an amino-acid-based surfactant, it's much gentler than traditional sulfates like sodium lauryl sulfate. Think of it as a soft, effective cleaner that respects your skin's natural moisture balance.
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
Cocaminobutyric Acid 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 Cocaminobutyric Acid.
- 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
Cocaminobutyric Acid is a semi-synthetic surfactant created by reacting coconut fatty acids with butyric acid and an amino acid backbone. It belongs to the family of acyl amino acid surfactants, known for their mildness and compatibility with sensitive skin.
How it works
In a cleanser, Cocaminobutyric Acid reduces the surface tension of water, allowing it to mix with oils and dirt on your skin. This creates a gentle lather that lifts impurities away without disrupting the skin's lipid barrier. Its large molecular structure means it doesn't penetrate deeply, staying on the surface to do its job without irritation.
Pros
Very gentle on skin
Unlike harsh sulfates, Cocaminobutyric Acid cleanses without stripping the skin's natural moisture barrier, making it suitable for daily use even on sensitive or eczema-prone skin.
Environmentally friendlier
Derived from renewable coconut oil and biodegradable, this surfactant has a lower environmental impact compared to some petroleum-based cleansers.
Cons and cautions
Limited heavy-duty cleansing
It may struggle to fully remove long-wear or waterproof makeup on its own, often requiring a double-cleansing step or combination with stronger surfactants.
Less studied than alternatives
While safety data is positive, there are fewer peer-reviewed studies on Cocaminobutyric Acid compared to more established surfactants like cocamidopropyl betaine.
Best for
- People with dry or sensitive skin looking for a non-stripping cleanser
- Anyone seeking sulfate-free, gentle cleansing options
Use caution if
- Those with a known allergy to coconut-derived ingredients (rare)
Usage tips
Safety summary
Cocaminobutyric Acid is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential, and no significant toxicity concerns have been reported in available safety assessments.
Research notes
Research on Cocaminobutyric Acid is limited but consistent with other acyl amino acid surfactants, which are well-documented as mild and skin-friendly. No specific clinical trials were found, but its safety profile is supported by analogy to similar ingredients reviewed by the Cosmetic Ingredient Review (CIR) panel.
Common label clues
- Typical concentration
- 1–10% in rinse-off products; lower in leave-on formulas
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Facial cleansers, Body washes, Shampoos, Micellar waters
- Environmental note
- Coconut oil is a renewable resource, and Cocaminobutyric Acid is biodegradable, making it a more sustainable choice compared to some synthetic surfactants.
Good to know
- Cocaminobutyric Acid is often used in 'sulfate-free' and 'gentle' cleanser formulations.
- It has a pH range of 5.5–7.0, which is close to skin's natural pH.
Common questions
What is Cocaminobutyric Acid in beauty products?
Cocaminobutyric Acid is a mild cleansing ingredient made from coconut oil and a short-chain fatty acid called butyric acid. It helps remove dirt, oil, and makeup from your skin without leaving it feeling tight or dry. Because it's an amino-acid-based surfactant, it's much gentler than traditional sulfates like sodium lauryl sulfate. Think of it as a soft, effective cleaner that respects your skin's natural moisture balance.
What does Cocaminobutyric Acid do in a beauty product?
In a cleanser, Cocaminobutyric Acid reduces the surface tension of water, allowing it to mix with oils and dirt on your skin. This creates a gentle lather that lifts impurities away without disrupting the skin's lipid barrier. Its large molecular structure means it doesn't penetrate deeply, staying on the surface to do its job without irritation.
Is Cocaminobutyric Acid safe for most people?
Cocaminobutyric Acid is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential, and no significant toxicity concerns have been reported in available safety assessments.
Who should be careful with Cocaminobutyric Acid?
Those with a known allergy to coconut-derived ingredients (rare)
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.