What Actually Treats Dandruff (and What Doesn't)
‘Ketoconazole shampoo’ and ‘anti-dandruff shampoo’ are among the most-searched hair terms in the UAE. Most of what’s marketed as anti-dandruff isn’t. Here is the honest version — including where our own ingredient stops.
What dandruff actually is
Dandruff and its more inflamed cousin, seborrhoeic dermatitis, are driven by Malassezia, a yeast that lives on everyone’s scalp, feeding on scalp oil. That is why the ingredients that actually work are antifungal — not ‘detox’, not clay, not a clarifying rinse.
What works, and what doesn’t
| Active / ingredient | Why | Works for dandruff? | Source / note |
|---|---|---|---|
| Ketoconazole (1% OTC, 2% Rx) | Antifungal — targets the Malassezia yeast that drives dandruff. | Yes — gold standard | Gupta, 2025 · Scopus 5× |
| Zinc pyrithione | Antifungal/antibacterial; lowers the yeast load. | Yes | FDA OTC active |
| Selenium sulfide | Antifungal; slows scalp-cell turnover. | Yes | FDA OTC active |
| Salicylic acid 1.8–3% | Keratolytic — lifts and clears scale. | Yes, at this dose | FDA monograph M032 |
| Salicylic acid 0.4% | Lifts surface build-up only; below the recognised dose. | No — clarifier, not anti-dandruff | FDA recognises 1.8–3% only |
| Coal tar | Slows cell turnover; older active. | Yes | Smell/staining limit use |
| Charcoal / onion / apple-cider ‘detox’ | Sensory or clarifying; not antifungal. | No real dandruff evidence | Marketing, not mechanism |
The 0.4% salicylic catch
Many ‘scalp’ shampoos — ours included — use salicylic acid at around 0.4%. That lifts build-up and leaves the scalp feeling clean, but the US FDA recognises salicylic acid for dandruff only at 1.8–3%. So we call ours a clarifier, not an anti-dandruff treatment. For true, recurring dandruff, reach for a proven antifungal above.
How to use an antifungal shampoo
Use an antifungal shampoo 2–3 times a week, leave it on for 3–5 minutes so the active reaches the scalp, then rinse. Once it’s controlled, drop to once a week to keep it away. Alternating two different antifungals can help if one stops working.
Where Tara fits
Our clarifying and scalp range lifts build-up and supports a healthy scalp — it is graded honestly and is not a dandruff drug. We’d rather tell you that than sell you the wrong fix. See which hair ingredients actually work, or browse the shampoos.
Sources: Gupta A.K. JEADV Clin Pract 2025 (Scopus 5×); US FDA OTC anti-dandruff monograph (21 CFR 358.710 / M032). Live Scopus counts, June 2026.