Ingredient review
Potassium Lauroyl Glycinate
INCI: Potassium Lauroyl Glycinate
A gentle, amino-acid-based cleanser that effectively removes dirt and oil while respecting the skin barrier.
In plain English
Potassium Lauroyl Glycinate is a mild cleansing ingredient made from glycine, an amino acid found naturally in the skin. It works by attracting both water and oil, allowing it to lift away dirt, makeup, and excess oil without stripping the skin's natural moisture barrier. Unlike harsher sulfates, it leaves skin feeling soft and comfortable, 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 Lauroyl Glycinate 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 Lauroyl Glycinate.
- 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 glycine (an amino acid) and lauric acid (from coconut or palm oil). It belongs to the family of amino-acid surfactants known for their gentle, skin-friendly cleansing properties.
How it works
It reduces the surface tension between water and oil, allowing impurities to be rinsed away. Its molecular structure is large and mild, so it cleanses without penetrating deeply or disrupting the skin's lipid barrier, resulting in less irritation and dryness.
Pros
Extremely gentle on skin
Its large molecular size and amino-acid base mean it cleanses without penetrating or irritating the skin barrier, making it ideal for daily use on sensitive or compromised skin.
Maintains skin hydration
Unlike sulfates, it does not strip away natural oils, so skin feels soft and hydrated after washing, reducing the need for heavy moisturizers.
Cons and cautions
Less effective on heavy makeup
Its mildness means it may struggle to remove waterproof mascara or long-wear foundation, often requiring a double-cleansing step.
Higher cost
Amino-acid surfactants are more expensive to produce than sulfates, which can make products containing them pricier.
Best for
- People with dry, sensitive, or eczema-prone skin
- Those looking for a sulfate-free, gentle daily cleanser
Use caution if
- Individuals seeking a deep-cleaning or exfoliating cleanser for very oily or acne-prone skin may need a stronger surfactant
Usage tips
Safety summary
Potassium Lauroyl Glycinate is considered very safe for cosmetic use. It has a low irritation and sensitization potential, and no significant toxicity concerns have been reported in typical concentrations. It is well-tolerated even by sensitive skin.
Research notes
Amino-acid surfactants like Potassium Lauroyl Glycinate 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, making them preferable for sensitive skin.
Common label clues
- Typical concentration
- 5–15% in rinse-off cleansers; lower in leave-on products
- Regulatory status
- Approved for use in cosmetics globally, including by the EU CosIng database and the US FDA (as part of generally recognized safe surfactants). No specific restrictions.
- Common uses
- Facial cleansers, Body washes, Shampoos, Baby care products
- Environmental note
- Derived from renewable plant sources (coconut/palm oil and glycine). It is biodegradable and considered more environmentally friendly than many petroleum-based surfactants.
Good to know
- Potassium Lauroyl Glycinate is often found in 'sulfate-free' and 'gentle' cleansers.
- It is compatible with a wide pH range (5.5–7.0), making it easy to formulate into balanced cleansers.
Common questions
What is Potassium Lauroyl Glycinate in beauty products?
Potassium Lauroyl Glycinate is a mild cleansing ingredient made from glycine, an amino acid found naturally in the skin. It works by attracting both water and oil, allowing it to lift away dirt, makeup, and excess oil without stripping the skin's natural moisture barrier. Unlike harsher sulfates, it leaves skin feeling soft and comfortable, making it a favorite for sensitive or dry skin types.
What does Potassium Lauroyl Glycinate do in a beauty product?
It reduces the surface tension between water and oil, allowing impurities to be rinsed away. Its molecular structure is large and mild, so it cleanses without penetrating deeply or disrupting the skin's lipid barrier, resulting in less irritation and dryness.
Is Potassium Lauroyl Glycinate safe for most people?
Potassium Lauroyl Glycinate is considered very safe for cosmetic use. It has a low irritation and sensitization potential, and no significant toxicity concerns have been reported in typical concentrations. It is well-tolerated even by sensitive skin.
Who should be careful with Potassium Lauroyl Glycinate?
Individuals seeking a deep-cleaning or exfoliating cleanser for very oily or acne-prone skin may need a stronger surfactant
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.