Sulfo lo

Sulfur 3% Soap Bar · Soap · Topical

Over the counter

Active ingredient

Active ingredients Sulfur 3%

Purpose

Purpose Acne Treatment

Uses

Uses Deep cleansing antibacterial soap for management of acne, blackheads and comedones.

Warnings

Warnings
• For external use only
• Avoid contact with eyes, wash with water if exposed
• Do no use on
• broken skin
• large areas of skin
• When using this product
• apply only to areas with acne
• skin irritation and dryness is more likely to occur if you use another topical acne medication at the same time.
• If irritation occurs, only use one topical acne medication at a time
• If undue irritation persists consult a physician
• Keep out of reach of children.
• If swallowed, get medical help or contact a Poison Control Center.

Do not use

• Do no use on
• broken skin
• large areas of skin

When using this product

• When using this product
• apply only to areas with acne
• skin irritation and dryness is more likely to occur if you use another topical acne medication at the same time.
• If irritation occurs, only use one topical acne medication at a time
• If undue irritation persists consult a physician

Keep out of reach of children

• Keep out of reach of children.
• If swallowed, get medical help or contact a Poison Control Center.

Directions

Directions
• Work into a lather and rinse with warm water
• Use daily as skin cleanser or as directed by a physician.

Other information

Other information Store at 20˚-25˚C (68˚-77˚F) [see USP Controlled Room Temperature].

Inactive ingredients

Inactive ingredients Sodium Tallowate, Sodium Cocoate/Sodium Palm Kernelate, Water (Aqua), Glycerin, Fragrance (Parfum), Sodium Chloride, Butyrospermum parkii (Shea) Butter, Yellow 5 (CI19140), Titanium Dioxide (CI77891), Pentasodium Pentetate, Tetrasodium Etidronate, Iron Oxides (CI77492), Tocopheryl Acetate

Label text from the FDA structured product label by Crown Laboratories (revised Jan 12, 2026). Long sections are shortened; the complete label is on DailyMed.

Active ingredients

Sulfo lo NDC products (1)

NDCStrength & formLabelerType
0316-0118Sulfur 30 mg/g
Soap
Crown LaboratoriesOTC MONOGRAPH DRUG

Frequently asked questions

What is Sulfo lo used for?

Uses Deep cleansing antibacterial soap for management of acne, blackheads and comedones.

Who makes Sulfo lo?

Sulfo lo is listed by 1 labeler in the FDA NDC directory, including Crown Laboratories.