Ingredient review
PEG-2 Caprylylamine
INCI: PEG-2 Caprylylamine
A mild synthetic surfactant that helps cleanse without stripping the skin, but may not suit ultra-sensitive types.
In plain English
PEG-2 Caprylylamine is a man-made ingredient that helps cleansing products foam and rinse away dirt while leaving skin or hair feeling soft. The 'PEG' part means it's made with polyethylene glycol, which makes it water-friendly, and the 'caprylylamine' part comes from coconut oil, giving it mild conditioning properties. It's often used to make cleansers gentler than traditional sulfates.
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
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
PEG-2 Caprylylamine 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 PEG-2 Caprylylamine.
- 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 synthetic surfactant derived from caprylic acid (a fatty acid from coconut oil) and ethylene oxide. It belongs to the PEG amine family and functions as both a cleansing agent and a mild conditioner.
How it works
It lowers the surface tension between water and oil, allowing dirt and excess sebum to be rinsed away. Its amine group also gives it a slight positive charge, which helps it deposit onto negatively charged hair or skin, providing a soft, conditioned feel.
Pros
Gentle on skin
Less stripping than traditional sulfates, making it suitable for daily use on normal to dry skin.
Adds softness
Its conditioning properties help prevent the tight, dry feeling some cleansers leave behind.
Cons and cautions
Not for everyone
A small percentage of people with very reactive skin may experience mild irritation or tingling.
Synthetic origin
Made through chemical processing, which may be a turn-off for those seeking exclusively natural ingredients.
Best for
- People with normal to dry skin looking for a mild cleanser
- Those who want a sulfate-free alternative in shampoos or body washes
Use caution if
- Individuals with known sensitivity to PEG compounds or amines
Usage tips
Safety summary
PEG-2 Caprylylamine is considered safe for use in rinse-off cosmetics at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has evaluated similar PEG amines and found them safe when formulated to be non-irritating. As with any surfactant, avoid contact with eyes and broken skin.
Research notes
Limited direct studies on PEG-2 Caprylylamine, but the broader class of PEG alkyl amines is well-studied and considered safe for topical use. Most evidence comes from safety assessments by cosmetic review panels rather than clinical efficacy trials.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. Subject to general cosmetic safety regulations.
- Common uses
- Shampoos, Body washes, Facial cleansers
- Environmental note
- PEG compounds can be persistent in the environment if not properly treated, but PEG-2 Caprylylamine is generally considered biodegradable.
Good to know
- PEG-2 Caprylylamine is considered biodegradable and is not classified as a known irritant in standard safety assessments.
- It is often used in 'sulfate-free' formulations to improve foam quality.
Common questions
What is PEG-2 Caprylylamine in beauty products?
PEG-2 Caprylylamine is a man-made ingredient that helps cleansing products foam and rinse away dirt while leaving skin or hair feeling soft. The 'PEG' part means it's made with polyethylene glycol, which makes it water-friendly, and the 'caprylylamine' part comes from coconut oil, giving it mild conditioning properties. It's often used to make cleansers gentler than traditional sulfates.
What does PEG-2 Caprylylamine do in a beauty product?
It lowers the surface tension between water and oil, allowing dirt and excess sebum to be rinsed away. Its amine group also gives it a slight positive charge, which helps it deposit onto negatively charged hair or skin, providing a soft, conditioned feel.
Is PEG-2 Caprylylamine safe for most people?
PEG-2 Caprylylamine is considered safe for use in rinse-off cosmetics at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has evaluated similar PEG amines and found them safe when formulated to be non-irritating. As with any surfactant, avoid contact with eyes and broken skin.
Who should be careful with PEG-2 Caprylylamine?
Individuals with known sensitivity to PEG compounds or amines
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.