Ingredient review
Sodium Carboxymethyl Chitosan Lauramide
INCI: SODIUM CARBOXYMETHYL CHITOSAN LAURAMIDE
A gentle, multi-tasking chitosan derivative that hydrates, forms a protective film, and offers mild cleansing without stripping the skin.
In plain English
This ingredient is a modified version of chitosan, which comes from the shells of shrimp and crabs. It has been chemically tweaked to be water-soluble and to add a fatty chain (lauramide) that gives it mild cleansing abilities. In skincare, it helps hold moisture, creates a light protective layer on your skin or hair, and can gently remove dirt and oil without being harsh. Think of it as a kinder, more hydrating alternative to traditional surfactants like sodium lauryl sulfate.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is still emerging, so marketing claims deserve extra caution.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Sodium Carboxymethyl Chitosan Lauramide 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 Carboxymethyl Chitosan Lauramide.
- 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
emergingThe ingredient may be promising, but claims should be treated more cautiously.
What it is
A semi-synthetic polymer derived from chitosan (from crustacean shells) that has been carboxymethylated for water solubility and then attached to lauric acid (a fatty acid from coconut or palm oil) to add mild surfactant properties.
How it works
It forms a thin, flexible film on the skin or hair that helps lock in moisture and protect against environmental stressors. The lauramide portion gives it the ability to surround and lift away dirt and oil, making it a gentle cleanser. It also has positive charges that help it cling to negatively charged hair and skin, improving feel and manageability.
Pros
Gentle cleansing
Unlike harsh sulfates, this ingredient cleanses without stripping the skin's natural moisture barrier, making it ideal for sensitive or dry skin types.
Hydrating film
It leaves a light, breathable film on the skin that helps retain moisture and protect against environmental damage, improving overall skin comfort.
Cons and cautions
Shellfish origin
Derived from crustacean shells, which may be off-putting or a theoretical concern for those with severe allergies, though processing removes most protein.
Limited research
As a newer ingredient, there is less published research on its long-term effects compared to traditional humectants and surfactants.
Best for
- People with dry or sensitive skin looking for a gentle cleanser
- Those who want a hydrating, film-forming ingredient in serums or moisturizers
Use caution if
- Individuals with known severe shellfish allergies who prefer to avoid any crustacean-derived ingredients (though risk is very low)
Usage tips
Safety summary
Generally recognized as safe for topical cosmetic use at typical concentrations. The ingredient is considered low-irritation and non-comedogenic. As with any new ingredient, patch testing is recommended for those with very sensitive skin or known allergies.
Research notes
Research on sodium carboxymethyl chitosan lauramide is still emerging. Studies on similar chitosan derivatives show good biocompatibility, moisturizing effects, and antimicrobial activity. More specific clinical data on this exact compound is limited but promising.
Common label clues
- Typical concentration
- 0.5% to 3% in rinse-off products; lower in leave-on formulations
- Regulatory status
- Approved for cosmetic use in most regions including the EU and US; no specific restrictions known
- Common uses
- Cleansers, Shampoos, Conditioners, Serums, Masks
- Environmental note
- Chitosan is a renewable byproduct of the seafood industry, making this ingredient relatively sustainable, though sourcing and processing methods vary.
Good to know
- Chitosan derivatives are often used in 'green' or eco-friendly formulations due to their biodegradable nature
- The lauramide chain is derived from lauric acid, commonly sourced from coconut oil
Common questions
What is Sodium Carboxymethyl Chitosan Lauramide in beauty products?
This ingredient is a modified version of chitosan, which comes from the shells of shrimp and crabs. It has been chemically tweaked to be water-soluble and to add a fatty chain (lauramide) that gives it mild cleansing abilities. In skincare, it helps hold moisture, creates a light protective layer on your skin or hair, and can gently remove dirt and oil without being harsh. Think of it as a kinder, more hydrating alternative to traditional surfactants like sodium lauryl sulfate.
What does Sodium Carboxymethyl Chitosan Lauramide do in a beauty product?
It forms a thin, flexible film on the skin or hair that helps lock in moisture and protect against environmental stressors. The lauramide portion gives it the ability to surround and lift away dirt and oil, making it a gentle cleanser. It also has positive charges that help it cling to negatively charged hair and skin, improving feel and manageability.
Is Sodium Carboxymethyl Chitosan Lauramide safe for most people?
Generally recognized as safe for topical cosmetic use at typical concentrations. The ingredient is considered low-irritation and non-comedogenic. As with any new ingredient, patch testing is recommended for those with very sensitive skin or known allergies.
Who should be careful with Sodium Carboxymethyl Chitosan Lauramide?
Individuals with known severe shellfish allergies who prefer to avoid any crustacean-derived ingredients (though risk is very low)
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.