Ingredient review
Myristaminopropionic Acid
INCI: MYRISTAMINOPROPIONIC ACID
A gentle, amino-acid-based surfactant that cleans without stripping the skin, making it ideal for sensitive or dry skin types.
In plain English
Myristaminopropionic acid is a mild cleansing ingredient made from myristic acid (a fatty acid found in coconut or palm oil) and an amino acid. It helps remove dirt and oil from your skin and hair without causing the tight, dry feeling that harsher soaps can leave behind. Because it's gentle, it's often used in products for sensitive skin.
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
Myristaminopropionic 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 Myristaminopropionic 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
Myristaminopropionic acid is a semi-synthetic surfactant derived from myristic acid (a fatty acid from coconut or palm oil) and an amino acid. It belongs to the class of amphoteric surfactants, meaning it can work in both acidic and alkaline conditions, and is known for its mildness.
How it works
In a cosmetic product, myristaminopropionic acid acts as a surfactant, reducing the surface tension between water and oil so that dirt and sebum can be rinsed away. It also has conditioning properties, leaving skin and hair feeling soft and smooth after washing.
Pros
Very gentle on skin
Unlike harsh sulfates, this surfactant cleans without stripping the skin's natural moisture barrier, reducing the risk of dryness and irritation.
Adds softness
It has conditioning properties that leave skin and hair feeling smooth and soft after washing, improving the overall sensory experience.
Cons and cautions
May not foam as much
Compared to sulfates, it produces a lower, creamier lather, which some users might perceive as less effective at cleansing.
Sustainability concerns
Derived from coconut or palm oil, its production can contribute to deforestation and habitat loss unless sourced from certified sustainable suppliers.
Best for
- People with dry or sensitive skin
- Those looking for a sulfate-free cleanser
Use caution if
- Individuals with known allergies to coconut or palm derivatives (rare)
Usage tips
Safety summary
Myristaminopropionic acid is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for sensitive skin. As with any ingredient, patch test if you have known sensitivities.
Research notes
Research on this specific surfactant is limited, but it is structurally similar to other well-studied mild amphoteric surfactants like cocamidopropyl betaine, which have a strong safety profile. It is generally recognized as safe by cosmetic ingredient review panels.
Common label clues
- Typical concentration
- 1–10% in rinse-off products
- 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, Conditioners
- Environmental note
- Derived from renewable plant sources (coconut or palm oil). Look for products with sustainable palm oil certification (RSPO) to minimize environmental impact.
Good to know
- Myristaminopropionic acid is often listed alongside other mild surfactants in 'sulfate-free' formulas.
- It is compatible with both acidic and alkaline pH ranges, making it versatile in formulation.
Common questions
What is Myristaminopropionic Acid in beauty products?
Myristaminopropionic acid is a mild cleansing ingredient made from myristic acid (a fatty acid found in coconut or palm oil) and an amino acid. It helps remove dirt and oil from your skin and hair without causing the tight, dry feeling that harsher soaps can leave behind. Because it's gentle, it's often used in products for sensitive skin.
What does Myristaminopropionic Acid do in a beauty product?
In a cosmetic product, myristaminopropionic acid acts as a surfactant, reducing the surface tension between water and oil so that dirt and sebum can be rinsed away. It also has conditioning properties, leaving skin and hair feeling soft and smooth after washing.
Is Myristaminopropionic Acid safe for most people?
Myristaminopropionic acid is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for sensitive skin. As with any ingredient, patch test if you have known sensitivities.
Who should be careful with Myristaminopropionic Acid?
Individuals with known allergies to coconut or palm derivatives (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.