What concentration of Sulfur is effective?

Typical effective concentrations of Sulfur are 2–10% in OTC products, commonly 3–5% in leave-on treatments, up to 10% in wash-off products.

What skin types is Sulfur suitable for?

Sulfur is suitable for acne-prone, oily, seborrhoeic dermatitis, rosacea, fungal acne.

The Skin Formulary

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Researched by Helena DeMaria-Williams

Formula IngredientAnti-Acne

Sulfur

Q: Can Sulfur cause skin irritation?

Sulfur has a medium irritation risk. INCIDecoder irritancy rating of 0, but can cause mild burning sensation and skin dryness at higher concentrations. Patch testing is recommended for first-time users. Has a characteristic unpleasant odour (rotten eggs). No EU CosIng Annex II or III restrictions for cosmetic use.

Q: Is Sulfur safe to use during pregnancy?

Sulfur is rated "safe" for pregnancy use. Topical sulfur is generally considered safe during pregnancy. It is one of the recommended acne treatments for pregnant women when retinoids and salicylic acid are contraindicated. Limited systemic absorption from topical use.

Q: Does Sulfur increase sun sensitivity?

Sulfur has a caution sun sensitivity risk. Sulfur's keratolytic action can thin the outermost skin layer, potentially increasing sun sensitivity. SPF 30+ is recommended during treatment, particularly when used alongside other exfoliating ingredients.

INCI: Sulfur

Sulfur is a naturally occurring element with a long history of dermatological use. It exhibits antifungal, antibacterial, and keratolytic activity, making it effective for treating acne, rosacea, and seborrhoeic dermatitis. Its efficacy depends on particle size, with precipitated sulfur (finer particles) outperforming sublimed sulfur. It works synergistically with other anti-acne agents like salicylic acid and sodium sulfacetamide.

What does this do in a formula?

anti-acne, antibacterial, antifungal, keratolytic, antiseborrhoeic, antidandruff

Is Sulfur safe? Key considerations

Can Sulfur cause irritation?

Medium Risk

INCIDecoder irritancy rating of 0, but can cause mild burning sensation and skin dryness at higher concentrations. Patch testing is recommended for first-time users. Has a characteristic unpleasant odour (rotten eggs). No EU CosIng Annex II or III restrictions for cosmetic use.

Does Sulfur increase sun sensitivity?

Caution Risk

Sulfur's keratolytic action can thin the outermost skin layer, potentially increasing sun sensitivity. SPF 30+ is recommended during treatment, particularly when used alongside other exfoliating ingredients.

Is Sulfur safe during pregnancy?

Safe

Topical sulfur is generally considered safe during pregnancy. It is one of the recommended acne treatments for pregnant women when retinoids and salicylic acid are contraindicated. Limited systemic absorption from topical use.

How does Sulfur work?

Individuals with sensitive skin, eczema, very dry skin, sulfur allergy should review the considerations above before use.

Which products contain Sulfur?

Shop products that contain Sulfur