Ingredient review
Laurylamine Dipropylenediamine
INCI: Laurylamine Dipropylenediamine
An effective cleansing and antistatic agent, but may cause irritation for sensitive skin types, especially at higher concentrations.
In plain English
Laurylamine Dipropylenediamine is a synthetic ingredient that helps cleanse and reduce static in hair and skin products. It works by attracting dirt and oil so they can be rinsed away, and it also helps reduce flyaways in hair. However, because it is a type of amine (a nitrogen-based compound), it can be irritating for some people, particularly those with sensitive or compromised skin barriers. It is most commonly found in shampoos and conditioners rather than leave-on products.
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
- synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Laurylamine Dipropylenediamine 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 Laurylamine Dipropylenediamine.
- 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 synthetic amine-based surfactant and conditioning agent derived from lauric acid (a fatty acid found in coconut or palm oil) combined with dipropylenediamine. It is not a natural ingredient but is manufactured through chemical synthesis.
How it works
In a cosmetic product, Laurylamine Dipropylenediamine acts as a surfactant, meaning it lowers the surface tension between water and oil, allowing dirt and sebum to be lifted away and rinsed off. It also carries a positive charge, which helps it bind to negatively charged hair and skin surfaces, reducing static electricity and providing a conditioning effect.
Pros
Effective cleanser
It efficiently removes excess oil and buildup from hair and skin, making it useful for oily or greasy hair types.
Reduces static
Its antistatic properties help tame flyaways and frizz, leaving hair smoother and easier to style.
Cons and cautions
Potential irritant
As an amine-based surfactant, it can cause stinging, redness, or dryness for those with sensitive or reactive skin.
Not for leave-on use
It is designed for rinse-off products only; using it in leave-on formulations increases the risk of irritation.
Best for
- People with oily hair or scalp who need a deep cleanser
- Those looking for a cost-effective conditioning surfactant in rinse-off products
Use caution if
- Individuals with sensitive skin, eczema, or a compromised skin barrier should avoid products with this ingredient, especially if it appears high on the ingredient list
Usage tips
Safety summary
Laurylamine Dipropylenediamine is considered safe for use in rinse-off cosmetic products at typical concentrations, but it carries a moderate risk of skin irritation. It is not recommended for sensitive skin or for leave-on applications. Regulatory bodies have not flagged it as a high-concern ingredient, but caution is advised for those with known sensitivities to amines or surfactants.
Research notes
Research on this specific ingredient is limited, but studies on similar amine-based surfactants indicate potential for skin irritation at higher concentrations. It is generally recognized as safe by industry panels when used as directed in rinse-off products. No significant toxicity or carcinogenicity concerns have been reported in cosmetic use.
Common label clues
- Typical concentration
- 0.1% to 2% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets, with typical concentration limits in rinse-off products. Not restricted for leave-on use but generally avoided due to irritation potential.
- Common uses
- Shampoos, Conditioners, Body washes, Facial cleansers
- Environmental note
- As a synthetic surfactant, it may have moderate environmental persistence. Biodegradability data is limited, so it is not considered a 'green' ingredient.
Good to know
- This ingredient is more common in professional or salon-grade shampoos than in everyday drugstore brands.
- It is often used in combination with milder surfactants to balance cleansing power with gentleness.
Common questions
What is Laurylamine Dipropylenediamine in beauty products?
Laurylamine Dipropylenediamine is a synthetic ingredient that helps cleanse and reduce static in hair and skin products. It works by attracting dirt and oil so they can be rinsed away, and it also helps reduce flyaways in hair. However, because it is a type of amine (a nitrogen-based compound), it can be irritating for some people, particularly those with sensitive or compromised skin barriers. It is most commonly found in shampoos and conditioners rather than leave-on products.
What does Laurylamine Dipropylenediamine do in a beauty product?
In a cosmetic product, Laurylamine Dipropylenediamine acts as a surfactant, meaning it lowers the surface tension between water and oil, allowing dirt and sebum to be lifted away and rinsed off. It also carries a positive charge, which helps it bind to negatively charged hair and skin surfaces, reducing static electricity and providing a conditioning effect.
Is Laurylamine Dipropylenediamine safe for most people?
Laurylamine Dipropylenediamine is considered safe for use in rinse-off cosmetic products at typical concentrations, but it carries a moderate risk of skin irritation. It is not recommended for sensitive skin or for leave-on applications. Regulatory bodies have not flagged it as a high-concern ingredient, but caution is advised for those with known sensitivities to amines or surfactants.
Who should be careful with Laurylamine Dipropylenediamine?
Individuals with sensitive skin, eczema, or a compromised skin barrier should avoid products with this ingredient, especially if it appears high on the ingredient list
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.