Ingredient review
Potassium Capryloyl Glutamate
INCI: Potassium Capryloyl Glutamate
A gentle, amino-acid-based surfactant that cleanses effectively without disrupting the skin barrier.
In plain English
Potassium Capryloyl Glutamate is a mild cleansing ingredient made from coconut fatty acids and the amino acid glutamic acid. It helps remove dirt, oil, and makeup from your skin and hair without causing dryness or irritation. Unlike harsh soaps, it respects your skin's natural moisture barrier, making it a favorite for sensitive or dry skin types.
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
Potassium Capryloyl Glutamate 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 Potassium Capryloyl Glutamate.
- 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
A semi-synthetic surfactant derived from coconut oil (caprylic acid) and glutamic acid, an amino acid naturally found in the skin. It belongs to the family of acyl glutamates, known for their gentle cleansing properties.
How it works
It works by reducing the surface tension of water, allowing oil and dirt to be lifted away from the skin and rinsed off. Its molecular structure has a water-loving head and an oil-loving tail, which traps impurities. Because it is pH-balanced (close to skin's natural pH of 5.5), it cleanses without stripping the skin's protective barrier.
Pros
Ultra-gentle cleansing
Derived from amino acids, it cleanses without stripping the skin's natural oils, making it ideal for sensitive or compromised skin barriers.
Skin-friendly pH
It works at a pH close to the skin's natural level (around 5.5), helping to maintain a healthy acid mantle and reduce irritation.
Cons and cautions
Moderate lather
It produces a creamy, low-to-moderate foam, which may not satisfy those who prefer the big, bubbly lather of sulfate cleansers.
Higher cost
As a specialty amino-acid surfactant, it is more expensive to produce than conventional sulfates, which can raise the price of finished products.
Best for
- People with sensitive, dry, or eczema-prone skin
- Those looking for a sulfate-free, gentle cleanser
Use caution if
- Individuals who prefer a very foamy, high-lather cleanser (this produces a moderate, creamy lather)
Usage tips
Safety summary
Potassium Capryloyl Glutamate is considered very safe for cosmetic use. It has low irritation and sensitization potential, and no known toxicity concerns at typical use levels. It is non-comedogenic and suitable for all skin types, including sensitive and reactive skin.
Research notes
Amino-acid surfactants like Potassium Capryloyl Glutamate have been studied for their mildness and skin compatibility. Research indicates they cause less protein denaturation and lipid barrier disruption compared to sodium lauryl sulfate. While not as extensively studied as some older surfactants, the available evidence supports its safety and gentleness.
Common label clues
- Typical concentration
- 1–15% in rinse-off products
- Regulatory status
- Approved for use in cosmetics globally, including by the EU CosIng database and the US FDA as a safe surfactant. No concentration restrictions for rinse-off products.
- Common uses
- Facial cleansers, Body washes, Shampoos, Makeup removers
- Environmental note
- Derived from renewable plant sources (coconut oil and fermented glutamic acid) and readily biodegradable, making it a more eco-friendly choice compared to petroleum-based surfactants.
Good to know
- It is often combined with other mild surfactants like Cocamidopropyl Betaine to improve foam and cleansing power.
- Potassium Capryloyl Glutamate is biodegradable and considered environmentally safer than many traditional surfactants.
Common questions
What is Potassium Capryloyl Glutamate in beauty products?
Potassium Capryloyl Glutamate is a mild cleansing ingredient made from coconut fatty acids and the amino acid glutamic acid. It helps remove dirt, oil, and makeup from your skin and hair without causing dryness or irritation. Unlike harsh soaps, it respects your skin's natural moisture barrier, making it a favorite for sensitive or dry skin types.
What does Potassium Capryloyl Glutamate do in a beauty product?
It works by reducing the surface tension of water, allowing oil and dirt to be lifted away from the skin and rinsed off. Its molecular structure has a water-loving head and an oil-loving tail, which traps impurities. Because it is pH-balanced (close to skin's natural pH of 5.5), it cleanses without stripping the skin's protective barrier.
Is Potassium Capryloyl Glutamate safe for most people?
Potassium Capryloyl Glutamate is considered very safe for cosmetic use. It has low irritation and sensitization potential, and no known toxicity concerns at typical use levels. It is non-comedogenic and suitable for all skin types, including sensitive and reactive skin.
Who should be careful with Potassium Capryloyl Glutamate?
Individuals who prefer a very foamy, high-lather cleanser (this produces a moderate, creamy lather)
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.