Ingredient decoder

Isocetyl alcohol: is it comedogenic? What it does in skincare

INCI name: Isocetyl Alcohol

Acne verdict Moderate clog risk

Rated a pore-clogger

  • Comedogenic4 / 5
  • Irritancy4 / 5

What it does

Branched fatty alcohol that softens skin.

  • Emollient
  • Skin conditioning
  • Viscosity controlling

Isocetyl alcohol in plain English

Isocetyl alcohol is a branched, liquid fatty alcohol used as a softener in creams. It is not a drying alcohol. It has moderate ratings on older comedogenic lists. Its rating comes from old rabbit-ear tests of the raw ingredient, which can overstate what happens with a finished product on human skin.

Is isocetyl alcohol bad for acne?

It can be. Isocetyl alcohol has a moderate clog risk rating for acne-prone skin. In Fulton's 1989 rabbit-ear test it scored 4 out of 5 for clogging pores and 4 out of 5 for irritation. That test used the raw ingredient, so a small amount in a finished product may behave differently. If you break out easily, check where it sits on the ingredient list: the higher it appears, the more of it the product usually contains.

Why it is flagged: A branched fatty alcohol with moderate ratings on older lists.

Clean routine and still breaking out? The cause may be internal. See what is driving it

Also called

  • Isocetyl Alcohol

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Frequently asked questions

Is isocetyl alcohol comedogenic?

Isocetyl alcohol scored 4 out of 5 for comedogenicity in Fulton's 1989 rabbit-ear study, where 0 means no clogging and 5 means severe. That is a high rating. The test used the raw ingredient, so a finished product may behave differently.

What does isocetyl alcohol do in skincare?

In short: branched fatty alcohol that softens skin. In formulas it is used for emollient, skin conditioning and viscosity controlling.

How can I check if a product with isocetyl alcohol is acne-safe?

Paste the product's full ingredient list into the free breakoutLabs acne-safe checker. It decodes every ingredient, flags commonly cited pore-cloggers and irritants, and points out acne fighters.

Sources