Dandruff is an itchy scalp problem, usually Malassezia plus irritation. The product that belongs at the top of a UK dandruff page is a medicated shampoo, not a styling mist. Nizoral is the clinical pick from the original guide. The other two Amazon links are useful hair products, labelled honestly so they are not sold as flake cures.
Nizoral Anti-Dandruff Treatment Shampoo
Ketoconazole shampoo. Use two to three times a week, on the scalp, with contact time. This is the actual dandruff product on this page.
REVLON PROFESSIONAL UniqONE Hair Treatment
Leave-in for softer lengths. Not an anti-dandruff shampoo. Useful after a medicated wash if hair feels stripped.
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How often to wash
Start with a medicated shampoo two to three times a week. Alternate with a gentle cleanser so the scalp does not revolt.
If flakes persist after a few weeks, speak to a pharmacist or GP — psoriasis and dermatitis are not the same as simple dandruff.
Related guides
Best Shampoo for Colour-Treated Hair
Haircare guide
Read guide →Best Curly Hair Products UK
Haircare guide
Read guide →Frequently asked questions
How often should I use anti-dandruff shampoo?
Two to three times a week to start, then ease to a gentle wash.
Does ketoconazole shampoo really work?
It targets Malassezia, a common cause. Many people see less itch within a few washes.
Can I leave dandruff shampoo on longer?
Follow the bottle. Three to five minutes is the usual useful window.