Is Isocetyl Stearate fungal acne safe?

No, Isocetyl Stearate is considered a trigger for fungal acne (Malassezia) as it typically contains lipids or esters that feed the yeast.

Is Isocetyl Stearate safe for pregnancy?

Yes, Isocetyl Stearate is generally considered safe for use during pregnancy.

Is Isocetyl Stearate vegan?

No, Isocetyl Stearate is typically derived from animal sources.

Is Isocetyl Stearate comedogenic?

Yes, Isocetyl Stearate has a comedogenic rating of 5/5, meaning it has a high likelihood of clogging pores.

Isocetyl Stearate

Isohexadecyl Stearate

Poor

Red Flag

Pores

5/5

Irritancy

0/5

FA Safe

❌ No

Pregnancy

✅ Safe

Vegan

❌ No

Science & Benefits

A branched-chain synthetic ester. While it is marketed as a 'non-oily' emollient, it is extremely comedogenic (Rating 5). Its branched structure makes it particularly substantive on the skin, forming a film that is difficult to wash away and highly prone to causing follicular impaction. It should be strictly avoided in leave-on moisturizers for acne patients.

Safety Alerts

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Fungal Acne: This ingredient is a lipid/ester that can feed Malassezia yeast. Avoid if you have active FA bumps.

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Non-Vegan: This ingredient is typically derived from animal sources (e.g. beeswax, lanolin, carmine).