Is Stearic Acid fungal acne safe?

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

Is Stearic Acid safe for pregnancy?

Yes, Stearic Acid is generally considered safe for use during pregnancy.

Is Stearic Acid vegan?

It depends. Stearic Acid can be derived from either plant or animal sources. Check the product label or brand FAQ.

Is Stearic Acid comedogenic?

No, Stearic Acid has a low comedogenic rating of 2/5 and is unlikely to clog pores.

Stearic Acid

Octadecanoic Acid

Good

Safe

Pores

2/5

Irritancy

0/5

FA Safe

❌ No

Pregnancy

✅ Safe

Vegan

❓ Check

Science & Benefits

Stearic Acid is a long-chain saturated fatty acid found naturally in various plant butters like cocoa and shea. In cosmetics, it functions as a potent thickener and emulsifier, giving creams a rich, sturdy texture. While its comedogenic rating is a low-to-moderate 2, it is a significant 'Red Flag' for users with Fungal Acne. Malassezia yeast thrives on fatty acids with carbon chain lengths between 11 and 24; Stearic Acid (C18) is a primary fuel source for this yeast. For standard acne-prone skin, it is generally well-tolerated, but for those with 'grainy' fungal-based texture, it can exacerbate inflammatory papules by feeding the underlying infection.

Safety Alerts

🍄

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

❓

Vegan Check Required: This ingredient (like Glycerin or Squalane) can be derived from either plants or animals. Check the specific product's FAQ or label.