Ingredient glossary
Sodium Cocoyl Isethionate
On your shelf ✓What Sodium Cocoyl Isethionate does for your skin, who it suits, and what to watch for.
INCI: Sodium Cocoyl Isethionate · Also: SCI
In short: Sodium Cocoyl Isethionate delivers cleansing and mildness, suits most skin types, and the evidence behind it is moderate.
- What it does
- Cleansing, mildness
- Best for
- Most skin types
- Evidence
- Moderate
- How long
- Straight away
What it actually is
The Glow take
Nice to have, and nothing to overthink.
Sodium Cocoyl Isethionate plays a quiet supporting role, rounding out a formula rather than being the reason you buy it.
— Maya
What it does
- cleansing
- mildness
moderate evidenceIndustry and dermatology sources describe sodium cocoyl isethionate as significantly less irritating than SLS and suitable for syndet cleansers in atopic and sensitive skin though formal TEWL data are limited compared with SLS models.
Who it's for, and who should skip it
Tends to suit
- oily
- combo
- normal
- sensitive
Approach with care
- very dry
- Clogs poresLow
- Irritation riskLow
How it fits each skin type
- DryTake care
- CombinationSuits
- OilySuits
- SensitiveSuits
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: Removal of surface sebum and soil during the wash.
An isethionate sulfonate head on a coconut acyl tail cleans by the same micellar mechanism as any surfactant, so the outcome is delivered during the wash. The claim that distinguishes SCI - mildness relative to sulfates - is a comparative irritancy property, not a benefit that accrues over weeks. This row's own evidence notes concede that formal TEWL data for SCI are limited compared with SLS.
Surfactant cleansing mechanism; syndet-bar mildness literature (comparative, not time-course)
Plays well with
- amphoteric surfactants
- nonionic surfactants
Sodium Cocoyl Isethionate, answered
Is Sodium Cocoyl Isethionate safe during pregnancy?
Yes. Sodium Cocoyl Isethionate 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 Sodium Cocoyl Isethionate?
Approach Sodium Cocoyl Isethionate with care if any of these apply to you: very dry.
What concentration of Sodium Cocoyl Isethionate actually works?
Its concentration is rarely printed on the label, so use the ingredient list as your clue: near the top third it is likely doing real work, near the bottom it is more of a sprinkle.
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