Ingredient review
Disodium N-Lauroyl Aspartate
INCI: Disodium N-Lauroyl Aspartate
A mild, amino-acid-based cleanser that effectively removes dirt and oil while respecting the skin barrier.
In plain English
This ingredient is a gentle cleansing agent made from lauric acid (found in coconut oil) and aspartic acid (an amino acid). Unlike harsh soaps that can strip your skin of its natural oils, it cleanses by lifting away dirt and excess oil without disrupting the skin's protective barrier. It leaves skin feeling clean but not tight or dry.
Review score
Safety, usefulness, and evidence
Strong fit for many routines
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
Easy yes for most routines
Disodium N-Lauroyl Aspartate 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 Disodium N-Lauroyl Aspartate.
- 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
Disodium N-Lauroyl Aspartate is a surfactant created by combining lauric acid (a fatty acid from coconut or palm oil) with aspartic acid (an amino acid). It belongs to the family of amino-acid surfactants, known for their mildness and compatibility with sensitive skin.
How it works
In a cleanser, this molecule has a water-loving head and an oil-loving tail. When you lather and rinse, the tails trap dirt, oil, and makeup, while the heads allow the whole mess to be washed away with water. Its large molecular structure makes it less penetrating and less irritating than smaller, harsher surfactants.
Pros
Extremely gentle on skin
Its large molecular structure means it doesn't penetrate the skin barrier, reducing the risk of irritation and dryness—ideal for sensitive or eczema-prone skin.
Maintains skin hydration
Unlike sulfates that can strip natural oils, this surfactant leaves the skin's moisture barrier intact, so you don't feel tight or parched after washing.
Cons and cautions
Less effective on heavy makeup
If you wear long-wear or waterproof makeup, you may need a double-cleansing step or a stronger surfactant to fully remove it.
Higher cost
Amino-acid surfactants are more expensive to produce, so products containing them often carry a higher price tag than sulfate-based cleansers.
Best for
- People with dry or sensitive skin who find traditional cleansers too harsh
- Anyone looking for a sulfate-free, gentle daily cleanser
Use caution if
- Those who prefer a high-foam, squeaky-clean feel may find it too mild
Usage tips
Safety summary
Disodium N-Lauroyl Aspartate is considered safe for use in cosmetics. It has a low irritation and comedogenic risk, and no significant safety concerns have been reported in scientific literature or regulatory reviews.
Research notes
Amino-acid surfactants like this one are well-studied for their mildness and skin compatibility. While direct clinical trials on this specific ingredient are limited, the broader class is supported by dermatological research showing reduced irritation compared to traditional sulfates.
Common label clues
- Typical concentration
- 1–10% in rinse-off products
- Regulatory status
- Approved for use in cosmetics worldwide, including by the FDA (USA) and EU CosIng database, with no known restrictions at typical concentrations.
- Common uses
- Facial cleansers, Body washes, Shampoos, Makeup removers
- Environmental note
- Derived from renewable plant sources (coconut/palm oil and amino acids) and is biodegradable, making it a more eco-friendly choice than some petroleum-based surfactants.
Good to know
- Often found in 'sulfate-free' and 'gentle cleanser' formulas.
- Works well in combination with other mild surfactants like cocamidopropyl betaine for a balanced foam.
Common questions
What is Disodium N-Lauroyl Aspartate in beauty products?
This ingredient is a gentle cleansing agent made from lauric acid (found in coconut oil) and aspartic acid (an amino acid). Unlike harsh soaps that can strip your skin of its natural oils, it cleanses by lifting away dirt and excess oil without disrupting the skin's protective barrier. It leaves skin feeling clean but not tight or dry.
What does Disodium N-Lauroyl Aspartate do in a beauty product?
In a cleanser, this molecule has a water-loving head and an oil-loving tail. When you lather and rinse, the tails trap dirt, oil, and makeup, while the heads allow the whole mess to be washed away with water. Its large molecular structure makes it less penetrating and less irritating than smaller, harsher surfactants.
Is Disodium N-Lauroyl Aspartate safe for most people?
Disodium N-Lauroyl Aspartate is considered safe for use in cosmetics. It has a low irritation and comedogenic risk, and no significant safety concerns have been reported in scientific literature or regulatory reviews.
Who should be careful with Disodium N-Lauroyl Aspartate?
Those who prefer a high-foam, squeaky-clean feel may find it too mild
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.