Is Sulfur fungal acne safe?

Yes, Sulfur is generally considered safe for fungal acne-prone skin.

Is Sulfur safe for pregnancy?

Yes, Sulfur is generally considered safe for use during pregnancy.

No, Sulfur is typically derived from animal sources.

Is Sulfur comedogenic?

Yes, Sulfur has a comedogenic rating of 3/5, meaning it has a high likelihood of clogging pores.

Sulfur

Sulphur

Average

Red Flag

Pores

3/5

Irritancy

4/5

FA Safe

✅ Yes

Pregnancy

✅ Safe

Vegan

❌ No

Science & Benefits

Sulfur is a traditional keratolytic that works by reacting with cysteine in the keratinocytes to produce hydrogen sulfide, which breaks down dead skin cells. While it is highly effective at 'drying out' active whiteheads, its comedogenic rating of 3 and potential for high irritancy (Rating 4) make it a 'conditional hero.' In 2026, it is best used as a short-contact spot treatment rather than a leave-on product for the whole face.

Safety Alerts

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