Is Laureth-4 fungal acne safe?

No, Laureth-4 is considered a trigger for fungal acne (Malassezia) as it typically contains lipids or esters that feed the yeast.

Is Laureth-4 safe for pregnancy?

Yes, Laureth-4 is generally considered safe for use during pregnancy.

Yes, Laureth-4 is typically vegan.

Is Laureth-4 comedogenic?

Yes, Laureth-4 has a comedogenic rating of 5/5, meaning it has a high likelihood of clogging pores.

Laureth-4

PEG-4 Lauryl Ether

Poor

Red Flag

Pores

5/5

Irritancy

4/5

FA Safe

❌ No

Pregnancy

✅ Safe

Vegan

✅ Yes

Science & Benefits

Laureth-4 is a polyethylene glycol ether of lauryl alcohol. It is a potent emulsifier and surfactant, but it is one of the most aggressive comedogens in cosmetic chemistry (Rating 5). Its molecular structure allows it to penetrate the follicle and induce rapid hyperkeratosis. While functional in rinse-off products, it is a significant risk factor for users who do not perform a thorough 'double cleanse,' as any residue can cause immediate congestion.

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.