Ingredient review
Capryloyl Glycine
INCI: Capryloyl Glycine
A mild, amino-acid-based ingredient that gently cleanses and helps calm skin without stripping moisture.
In plain English
Capryloyl glycine is a gentle cleansing ingredient made by combining a fatty acid from coconut oil with the amino acid glycine. It helps remove dirt and oil without stripping your skin's natural moisture barrier. It also has mild antimicrobial properties that can help keep the skin's microbiome balanced, making it a popular choice for sensitive or acne-prone skin.
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
Capryloyl Glycine 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 Capryloyl Glycine.
- 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
Capryloyl glycine is a lipoamino acid — a combination of caprylic acid (a fatty acid found in coconut oil) and glycine (a natural amino acid). It acts as a mild surfactant and skin-conditioning agent.
How it works
It works by lowering the surface tension between water and oil, allowing impurities to be rinsed away. Unlike harsher surfactants, it binds gently to the skin and does not disrupt the lipid barrier. Its antimicrobial activity helps reduce the growth of bacteria that can contribute to acne.
Pros
Ultra-gentle cleansing
Unlike sulfates, capryloyl glycine cleanses without stripping the skin's natural oils, making it ideal for dry or sensitive skin.
Microbiome-friendly
Its mild antimicrobial properties help control acne-causing bacteria without harming beneficial skin flora, supporting a balanced complexion.
Cons and cautions
Low foam profile
It produces a low, creamy lather rather than big bubbles, which may disappoint those who prefer a foamy cleanser experience.
Potential tackiness at high levels
In leave-on products at high concentrations, it can leave a slightly sticky or tacky feel on the skin.
Best for
- People with sensitive, dry, or reactive skin looking for a gentle cleanser
- Those with acne-prone skin who want a non-stripping, microbiome-friendly option
Use caution if
- Individuals with a known allergy to coconut-derived ingredients (rare)
Usage tips
Safety summary
Capryloyl glycine is well-tolerated by most skin types, with a low irritation and comedogenic risk. It is safe for use in rinse-off and leave-on products at typical concentrations. Patch testing is recommended for those with very sensitive skin or coconut allergies.
Research notes
Studies show capryloyl glycine has mild antimicrobial activity against Propionibacterium acnes and Staphylococcus aureus, supporting its use in acne-prone formulations. Its gentle surfactant profile is backed by dermatological testing for low irritation potential.
Common label clues
- Typical concentration
- 0.5% to 3% in leave-on products; up to 10% in rinse-off cleansers
- Regulatory status
- Approved for use in cosmetics globally, including by the EU CosIng database and the US FDA as a cosmetic ingredient.
- Common uses
- Cleansers, Toners, Leave-on treatments
- Environmental note
- Derived from renewable coconut oil and glycine, it is biodegradable and considered environmentally friendly compared to some synthetic surfactants.
Good to know
- Capryloyl glycine is often paired with other mild surfactants like cocamidopropyl betaine to improve foam and feel.
- It is considered a 'smart' surfactant because it becomes less active in acidic pH, reducing irritation even further.
Common questions
What is Capryloyl Glycine in beauty products?
Capryloyl glycine is a gentle cleansing ingredient made by combining a fatty acid from coconut oil with the amino acid glycine. It helps remove dirt and oil without stripping your skin's natural moisture barrier. It also has mild antimicrobial properties that can help keep the skin's microbiome balanced, making it a popular choice for sensitive or acne-prone skin.
What does Capryloyl Glycine do in a beauty product?
It works by lowering the surface tension between water and oil, allowing impurities to be rinsed away. Unlike harsher surfactants, it binds gently to the skin and does not disrupt the lipid barrier. Its antimicrobial activity helps reduce the growth of bacteria that can contribute to acne.
Is Capryloyl Glycine safe for most people?
Capryloyl glycine is well-tolerated by most skin types, with a low irritation and comedogenic risk. It is safe for use in rinse-off and leave-on products at typical concentrations. Patch testing is recommended for those with very sensitive skin or coconut allergies.
Who should be careful with Capryloyl Glycine?
Individuals with a known allergy to coconut-derived ingredients (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.