Ingredient review
Myristoyl Methylalanine
INCI: Myristoyl Methylalanine
A mild, amino-acid-based surfactant that cleanses without stripping the skin, making it ideal for sensitive or dry skin types.
In plain English
Myristoyl Methylalanine is a gentle cleansing ingredient made from an amino acid (a building block of protein) and a fatty acid. It helps remove dirt, oil, and makeup from your skin and hair without being harsh or drying. Unlike traditional soaps that can leave your skin feeling tight, this ingredient creates a soft, creamy lather that rinses away cleanly, leaving your skin feeling comfortable and balanced.
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
Myristoyl Methylalanine 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 Myristoyl Methylalanine.
- 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
Myristoyl Methylalanine is a surfactant, meaning it helps water mix with oil and dirt so they can be rinsed away. It is derived from the amino acid alanine and myristic acid, a fatty acid found naturally in coconut oil. It belongs to a family of mild, amino-acid-based cleansers that are popular in gentle skincare formulations.
How it works
In a cosmetic product, Myristoyl Methylalanine works by reducing the surface tension of water, allowing it to penetrate and lift away oils and impurities from the skin. Its molecular structure has a water-loving head and an oil-loving tail, which surrounds dirt and oil to form tiny droplets that rinse off easily. Because it is derived from an amino acid, it has a pH close to that of healthy skin (around 5.5), so it cleanses without disrupting the skin's natural protective barrier.
Pros
Extremely gentle on skin
Unlike sulfates, this surfactant cleanses without stripping the skin's natural oils, reducing the risk of dryness, tightness, and irritation.
pH-friendly formula
It works at a pH close to the skin's natural level (around 5.5), which helps maintain a healthy skin barrier and microbiome.
Cons and cautions
Less effective on heavy makeup
If you wear long-wearing or waterproof makeup, you may need a double-cleansing routine or a stronger first cleanser to remove everything.
Higher cost
Amino-acid-based surfactants are more expensive to produce than traditional sulfates, so products containing them often have a higher price tag.
Best for
- People with dry, sensitive, or easily irritated skin
- Those looking for a gentle daily facial cleanser
- Individuals with conditions like eczema or rosacea who need mild cleansing
Use caution if
- People who prefer a high-foaming, squeaky-clean feel may find it too gentle
- Those with very oily skin might need a more robust cleanser for deep pore cleansing
Usage tips
Safety summary
Myristoyl Methylalanine is considered safe for use in cosmetics. It has a low irritation and comedogenic risk, making it suitable for sensitive skin. No significant safety concerns have been raised by regulatory bodies.
Research notes
Amino-acid-based surfactants like Myristoyl Methylalanine are well-studied for their mildness and skin compatibility. Research indicates they are less damaging to the skin barrier compared to traditional anionic surfactants like sodium lauryl sulfate.
Common label clues
- Typical concentration
- Usually 1–10% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the US, EU, and other major markets. It is not classified as a hazardous substance under normal use conditions.
- Common uses
- Facial cleansers, Body washes, Shampoos, Makeup removers
- Environmental note
- Derived from renewable plant sources (coconut oil and alanine), and is generally considered to have a lower environmental impact compared to petroleum-based surfactants.
Good to know
- Myristoyl Methylalanine is often listed near the middle or end of an ingredient list, as it is typically used at lower concentrations.
- It is considered biodegradable and more environmentally friendly than some traditional surfactants.
Common questions
What is Myristoyl Methylalanine in beauty products?
Myristoyl Methylalanine is a gentle cleansing ingredient made from an amino acid (a building block of protein) and a fatty acid. It helps remove dirt, oil, and makeup from your skin and hair without being harsh or drying. Unlike traditional soaps that can leave your skin feeling tight, this ingredient creates a soft, creamy lather that rinses away cleanly, leaving your skin feeling comfortable and balanced.
What does Myristoyl Methylalanine do in a beauty product?
In a cosmetic product, Myristoyl Methylalanine works by reducing the surface tension of water, allowing it to penetrate and lift away oils and impurities from the skin. Its molecular structure has a water-loving head and an oil-loving tail, which surrounds dirt and oil to form tiny droplets that rinse off easily. Because it is derived from an amino acid, it has a pH close to that of healthy skin (around 5.5), so it cleanses without disrupting the skin's natural protective barrier.
Is Myristoyl Methylalanine safe for most people?
Myristoyl Methylalanine is considered safe for use in cosmetics. It has a low irritation and comedogenic risk, making it suitable for sensitive skin. No significant safety concerns have been raised by regulatory bodies.
Who should be careful with Myristoyl Methylalanine?
People who prefer a high-foaming, squeaky-clean feel may find it too gentle Those with very oily skin might need a more robust cleanser for deep pore cleansing
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.