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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Frequently asked questions
Where can I buy an authentic ketoconazole or zinc pyrithione shampoo in Bangladesh?
Buy from a seller who can show the importer's invoice and batch number for the shampoo. TheSkinProof is an invoice-verified skincare marketplace where every product is checked against the invoice and batch before it is listed.
Can a strong anti-dandruff shampoo make dry hair rougher?
Yes, frequent use of a strong active like selenium sulfide or salicylic acid can leave hair feeling rough or stripped, so follow with a conditioner on the lengths and limit use to two or three times a week. If hair stays dry, switch to a milder zinc pyrithione formula on other wash days.
How can I tell if an anti-dandruff shampoo is fake?
Compare the batch code on the bottle with the outer box and check that the cap seal is unbroken; a faded label, blurry print or an unusual scent are also warning signs. When in doubt, avoid the bottle rather than risk scalp irritation.