Quick answer
There is no single best anti-dandruff shampoo — there are four active ingredients, and the right one depends on your scalp.
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1. Ketoconazole — the strongest antifungal
Best for stubborn, recurring dandruff and seborrheic dermatitis.
2. Zinc pyrithione — the everyday option
Milder, good for regular maintenance.
3. Selenium sulfide — for heavy flaking
Effective, but can affect colour-treated hair.
4. Salicylic acid — for thick, crusted buildup
Lifts scale rather than killing yeast; often paired with another active.
Matching to your scalp
Oily scalp with yellow flakes points to ketoconazole or zinc pyrithione. Dry scalp with fine white flakes may just need gentler washing and a conditioner.
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