Ingredient review
PEG-6 Caprylate/Caprate
INCI: PEG-6 Caprylate/Caprate
A gentle, water-friendly emollient that helps products spread smoothly without leaving a greasy feel.
In plain English
PEG-6 Caprylate/Caprate is a semi-synthetic ingredient made from coconut-derived fatty acids and polyethylene glycol. It acts as a mild emulsifier and emollient, helping water and oil mix in cleansers and lotions. Because it's water-soluble, it rinses off easily and doesn't leave a heavy residue, making it a good choice for lightweight, non-greasy formulas.
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
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
PEG-6 Caprylate/Caprate 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-6 Caprylate/Caprate.
- 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 polyethylene glycol (PEG) derivative of caprylic/capric fatty acids, which come from coconut or palm kernel oil. The 'PEG-6' indicates the number of ethylene oxide units, giving it water solubility.
How it works
It reduces surface tension between oil and water, allowing them to blend into a stable emulsion. It also softens the skin by forming a thin, non-occlusive film that improves texture without clogging pores.
Pros
Lightweight feel
Unlike heavier oils, PEG-6 Caprylate/Caprate spreads easily and rinses clean, making it ideal for gel cleansers and lightweight lotions.
Low irritation risk
Clinical data and safety reviews indicate it is very mild on skin, with low potential for stinging or redness.
Cons and cautions
Manufacturing impurities
Poorly refined PEGs can contain trace 1,4-dioxane, a potential carcinogen. Reputable brands use purification steps to remove it.
Not natural
As a semi-synthetic, it doesn't fit 'natural' or 'clean beauty' criteria, which may matter to some consumers.
Best for
- People with normal to oily skin who prefer lightweight textures
- Anyone looking for a gentle, non-comedogenic emollient in cleansers
Use caution if
- Those with known sensitivity to PEG compounds or ethylene oxide derivatives
Usage tips
Safety summary
PEG-6 Caprylate/Caprate is considered safe in cosmetics at typical use levels. The main concern is potential contamination with 1,4-dioxane, which is regulated and can be removed during manufacturing. For most users, it poses very low risk of irritation or clogged pores.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) and the European Chemicals Agency (ECHA) support its use in rinse-off and leave-on products. No significant skin sensitization or toxicity has been reported in standard tests.
Common label clues
- Typical concentration
- 1–5% in rinse-off products; lower in leave-on formulas
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. The Cosmetic Ingredient Review (CIR) panel has deemed PEG compounds safe when formulated to minimize impurities.
- Common uses
- Cleansers, Moisturizers, Makeup removers, Body washes
- Environmental note
- Derived from plant-based fatty acids (coconut/palm), but the PEG portion is synthetic. Biodegradability is good, but sourcing of palm oil should be considered for sustainability.
Good to know
- PEG-6 Caprylate/Caprate is often used in micellar waters because it helps lift makeup and dirt without harsh foaming.
- It is biodegradable and generally considered safe by cosmetic safety panels.
Common questions
What is PEG-6 Caprylate/Caprate in beauty products?
PEG-6 Caprylate/Caprate is a semi-synthetic ingredient made from coconut-derived fatty acids and polyethylene glycol. It acts as a mild emulsifier and emollient, helping water and oil mix in cleansers and lotions. Because it's water-soluble, it rinses off easily and doesn't leave a heavy residue, making it a good choice for lightweight, non-greasy formulas.
What does PEG-6 Caprylate/Caprate do in a beauty product?
It reduces surface tension between oil and water, allowing them to blend into a stable emulsion. It also softens the skin by forming a thin, non-occlusive film that improves texture without clogging pores.
Is PEG-6 Caprylate/Caprate safe for most people?
PEG-6 Caprylate/Caprate is considered safe in cosmetics at typical use levels. The main concern is potential contamination with 1,4-dioxane, which is regulated and can be removed during manufacturing. For most users, it poses very low risk of irritation or clogged pores.
Who should be careful with PEG-6 Caprylate/Caprate?
Those with known sensitivity to PEG compounds or ethylene oxide derivatives
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.