Ingredient review
Cocamidopropyl Dimethylamine Hydrolyzed Collagen
INCI: Cocamidopropyl Dimethylamine Hydrolyzed Collagen
A gentle conditioning ingredient that helps soften hair and skin, but may cause irritation for sensitive scalps.
In plain English
This ingredient is a mix of a coconut-derived fatty acid (cocamidopropyl dimethylamine) and broken-down collagen proteins (hydrolyzed collagen). In products, it acts like a mild soap and conditioner, helping hair feel softer and less tangled, and skin feel smoother. It's often used in shampoos and body washes to reduce the harshness of stronger cleansers.
Review score
Safety, usefulness, and evidence
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
- semi synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Cocamidopropyl Dimethylamine Hydrolyzed Collagen 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging Cocamidopropyl Dimethylamine 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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
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 combining a coconut-based conditioning surfactant with hydrolyzed collagen, a protein fragment that can temporarily bind to hair and skin.
How it works
The cocamidopropyl part helps the ingredient act as a mild surfactant, gently lifting dirt and oil. The hydrolyzed collagen deposits a thin protein film on hair or skin, which can reduce static, add softness, and temporarily smooth the surface.
Pros
Gentle conditioning
Helps soften hair and reduce tangling without the heavy buildup of silicones or oils.
Mild cleansing
Works as a gentle surfactant that cleans without stripping natural oils, making it suitable for daily use.
Cons and cautions
Potential irritant
Cocamidopropyl compounds are known to cause contact dermatitis in some people, especially on sensitive scalps.
Animal-derived collagen
Hydrolyzed collagen is typically sourced from animal hides or bones, so it is not vegan-friendly.
Best for
- People with normal to dry hair looking for extra conditioning
- Those who want a gentler alternative to sulfate-heavy cleansers
Use caution if
- Individuals with known sensitivity to cocamidopropyl compounds or coconut-derived ingredients
- Vegans or those avoiding animal-derived collagen
Usage tips
Safety summary
Generally considered safe for most people when used in rinse-off products at typical concentrations. However, there is a moderate risk of allergic contact dermatitis, particularly for those with sensitive skin or a history of reactions to cocamidopropyl compounds.
Research notes
Studies on cocamidopropyl compounds show a low but notable rate of contact allergy (around 1-3% of patch-tested populations). Hydrolyzed collagen has been shown to temporarily improve hair surface properties in lab tests, but clinical evidence for long-term benefits is limited.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and other major markets. The EU has set a maximum concentration limit of 3% for cocamidopropyl betaine (a related compound), but no specific limit for this ingredient.
- Common uses
- Shampoos, Conditioners, Hair masks, Body washes, Facial cleansers
- Environmental note
- Coconut oil is a renewable resource, but collagen sourcing may involve animal agriculture. Biodegradability is moderate.
Good to know
- This ingredient is often listed near the middle of an ingredient list, indicating moderate concentration.
- It can be combined with other surfactants to create a milder overall cleansing system.
Common questions
What is Cocamidopropyl Dimethylamine Hydrolyzed Collagen in beauty products?
This ingredient is a mix of a coconut-derived fatty acid (cocamidopropyl dimethylamine) and broken-down collagen proteins (hydrolyzed collagen). In products, it acts like a mild soap and conditioner, helping hair feel softer and less tangled, and skin feel smoother. It's often used in shampoos and body washes to reduce the harshness of stronger cleansers.
What does Cocamidopropyl Dimethylamine Hydrolyzed Collagen do in a beauty product?
The cocamidopropyl part helps the ingredient act as a mild surfactant, gently lifting dirt and oil. The hydrolyzed collagen deposits a thin protein film on hair or skin, which can reduce static, add softness, and temporarily smooth the surface.
Is Cocamidopropyl Dimethylamine Hydrolyzed Collagen safe for most people?
Generally considered safe for most people when used in rinse-off products at typical concentrations. However, there is a moderate risk of allergic contact dermatitis, particularly for those with sensitive skin or a history of reactions to cocamidopropyl compounds.
Who should be careful with Cocamidopropyl Dimethylamine Hydrolyzed Collagen?
Individuals with known sensitivity to cocamidopropyl compounds or coconut-derived ingredients Vegans or those avoiding animal-derived collagen
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.