Ingredient glossary
Cetearyl Isononanoate
On your shelf ✓What Cetearyl Isononanoate does for your skin, who it suits, and what to watch for.
INCI: Cetearyl Isononanoate
In short: Cetearyl Isononanoate delivers softening and film forming, suits most skin types, and the evidence behind it is moderate.
- What it does
- Softening, film forming
- Best for
- Most skin types
- Evidence
- Moderate
- How long
- Straight away
The molecule
The Glow take
A comfort ingredient, and none the worse for it.
Cetearyl Isononanoate is here for feel and moisture, softening the skin and slowing water loss. More comfort than correction.
— Maya
What it does
- softening
- film forming
moderate evidenceIncluded in broad alkyl ester safety assessments with low irritation potential and good skin conditioning performance.
On a label: usually effective at 1-10%.
Who it's for, and who should skip it
Tends to suit
- normal
- dry
Approach with care
- acne prone if high
- Clogs poresLow
- Irritation riskLow
How it fits each skin type
- DrySuits
- CombinationSuits
- OilySuits
- SensitiveSuits
Take extra care if any of these apply to you: acne prone (at high strength).
Where it fits in your routine
This one works on contact — there is nothing to wait for.
What that covers, and what it does not
Measured on: cushioning surface film and immediate smoothing, on contact.
A fatty-alcohol/branched-C9 ester used at 1-10% for cushion and emulsion stability, hydration score 1 and no active role. The film-forming smoothing is physical and appears on application; the emulsion-stability half of its job happens in the bottle and never surfaces as a skin outcome. No trial times any skin measure for it.
Mechanism; CIR alkyl ester safety assessments.
Plays well with
- humectants
- occlusives
Cetearyl Isononanoate, answered
Is Cetearyl Isononanoate safe during pregnancy?
Yes. Cetearyl Isononanoate is considered safe to use during pregnancy and breastfeeding. As with anything, if you are unsure it is worth a quick word with your doctor or midwife.
Who should avoid Cetearyl Isononanoate?
Approach Cetearyl Isononanoate with care if any of these apply to you: acne prone (at high strength).
What concentration of Cetearyl Isononanoate actually works?
Cetearyl Isononanoate tends to do its job in the 1 to 10% range. Much lower and it is likely underdosed.
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