Ingredient guide ›

Salicylic Acid

The pore unclogger.

What it does

Loosens dead skin cells and clears pores. In shampoo it helps with flakes, and it can keep products fresh.

Good to know

A dermatology review notes skin can absorb it when strong products cover large areas. The EU doesn't allow it in products for children under 3.

Often found in: Shampoos, Shower gels, Anti-dandruff shampoos

Around the world

• United States: Sold as an over-the-counter drug for acne (0.5-2%) and dandruff (1.8-3%). Otherwise, no FDA limit. Source
• EU and UK: Max 3% in rinse-off hair care, 2% in most other products. EU only: 0.5% in body lotion and eye and lip makeup. Not for under-3s. Source
• Canada: Max 2% in cosmetics. Source
• Australia: Allowed in skin products up to 40%. Above that it's controlled (Schedule 3). Source

Sources

• A review of toxicity from topical salicylic acid preparations (J Am Acad Dermatol, 2014) (Medical)
• SCCS opinion: Salicylic acid (2023) (Independent)
• US 21 CFR 358.710 (dandruff ingredients) (Regulator)