Resorcinol is an organic chemical compound with the formula C₆H₄(OH)₂ (benzene-1,3-diol).
Appearance: White crystalline solid/powder that can turn pink upon exposure to light and air.
Solubility: Highly soluble in water, alcohol, and ether.
Primary Uses
Industrial & Adhesives: Acts as a key building block that condenses with formaldehyde to create durable Resorcinol-formaldehyde resins used in tire-cord rubber bonding and high-performance wood adhesives.
Topical Medications: Used as a keratolytic, antiseptic, and anti-inflammatory agent to remove hard, scaly skin.
Found in treatments for acne vulgaris, eczema, psoriasis, seborrheic dermatitis, corns, calluses, warts, and mild hidradenitis suppurativa.
Resorcinol is a topical antiseptic and keratolytic — meaning it helps break down and shed the outer layer of skin.
It’s been around a long time and shows up in over-the-counter products, usually combined with sulfur.
Cosmetics & Hair Dyes: Used in permanent hair dye formulations typically around 1.25% to 5% concentration where it reacts with a peroxide developer to permanently bond color to hair.
Serves as a precursor for dyes, plasticizers, pharmaceuticals, UV stabilizers, and lead styphnate explosives.
Common Side Effects: Localized skin redness, peeling, irritation, and potential lightening or darkening of hair.
Can cause skin irritation, redness, or peeling, especially at first May temporarily darken light-colored hair Not for use on broken or infected skin. Kept away from eyes and mucous membranes.
Systemic Toxicity Risks: Can be absorbed through broken, cut, or large areas of skin—especially in infants and children.
Excessive absorption can lead to resorcinol poisoning, methemoglobinemia, cyanosis, thyroid hormone synthesis disruption, dizziness, and convulsions.
Used for: Acne and oily skin — helps unclog pores and peel dead skin Seborrheic dermatitis, eczema, and psoriasis flare-ups Sometimes in antifungal or anti-itch preparations
It softens and loosens hardened or scaly skin so it sheds, which is why it’s often paired with sulfur in acne creams and lotions.
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