Ingredient review
C14-18 Acid Glycol Ester
INCI: C14-18 Acid Glycol Ester
A gentle synthetic emollient that helps products feel smooth and spread easily, with a low risk of irritation or clogging pores.
In plain English
C14-18 Acid Glycol Ester is a man-made ingredient that acts like a moisturizing oil. It helps creams and lotions feel silky and spread smoothly on your skin without leaving a greasy residue. Think of it as a helper that makes your skincare feel nicer to use, while also keeping the product stable and effective.
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
C14-18 Acid Glycol Ester 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 C14-18 Acid Glycol Ester.
- 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 ester made from fatty acids (C14-18) and glycol, designed to mimic the skin-friendly properties of natural oils. It is a waxy solid at room temperature but melts on contact with skin.
How it works
It sits on the surface of the skin, forming a thin, non-occlusive film that reduces water loss and gives a soft, smooth feel. It also helps other ingredients mix together evenly and improves the overall texture of the product.
Pros
Silky, non-greasy feel
Creates a smooth, velvety texture on skin without the heavy or sticky feeling some oils leave behind.
Low irritation potential
Rated low for both irritation and comedogenicity, making it suitable for sensitive and acne-prone skin types.
Cons and cautions
Synthetic origin
Derived from petrochemical or processed plant sources, which may not align with a natural or clean beauty philosophy.
Limited independent research
Most safety data comes from industry sources; long-term skin effects are not extensively studied in peer-reviewed literature.
Best for
- People with normal to dry skin looking for a light emollient
- Anyone who prefers non-greasy moisturizers
Use caution if
- Those with a strong preference for 100% natural ingredients
Usage tips
Safety summary
C14-18 Acid Glycol Ester is considered safe for cosmetic use with a low risk of skin irritation or sensitization. It is not known to be comedogenic, making it suitable for most skin types.
Research notes
Safety assessments rely on analogy to similar fatty acid esters, which have been reviewed by the Cosmetic Ingredient Review panel and found safe at typical concentrations. Direct peer-reviewed studies on this specific ester are limited.
Common label clues
- Typical concentration
- Typically 1–5% in leave-on products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. The Cosmetic Ingredient Review (CIR) panel has deemed similar fatty acid esters safe at typical use levels.
- Common uses
- Moisturizers, Creams, Lotions, Lipsticks, Foundations
- Environmental note
- As a synthetic ingredient, its environmental impact depends on the manufacturing process. It is not known to be biodegradable in all conditions.
Good to know
- This ingredient is often used in combination with other emollients to fine-tune product texture.
- It is considered safe by major cosmetic safety panels when used as directed.
Common questions
What is C14-18 Acid Glycol Ester in beauty products?
C14-18 Acid Glycol Ester is a man-made ingredient that acts like a moisturizing oil. It helps creams and lotions feel silky and spread smoothly on your skin without leaving a greasy residue. Think of it as a helper that makes your skincare feel nicer to use, while also keeping the product stable and effective.
What does C14-18 Acid Glycol Ester do in a beauty product?
It sits on the surface of the skin, forming a thin, non-occlusive film that reduces water loss and gives a soft, smooth feel. It also helps other ingredients mix together evenly and improves the overall texture of the product.
Is C14-18 Acid Glycol Ester safe for most people?
C14-18 Acid Glycol Ester is considered safe for cosmetic use with a low risk of skin irritation or sensitization. It is not known to be comedogenic, making it suitable for most skin types.
Who should be careful with C14-18 Acid Glycol Ester?
Those with a strong preference for 100% natural ingredients
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.