How to Get Rid of Dandruff: What Actually Works

Part of the Access Doctor Dandruff & Scalp Psoriasis guide. If OTC isn't enough, see when to upgrade to prescription treatment.

What Causes Dandruff

The scalp constantly sheds dead skin cells — normally invisibly. Dandruff happens when this renewal speeds up and cells clump into visible flakes. The main driver in most cases is Malassezia globosa, a yeast that naturally lives on the scalp. When it overgrows, it breaks scalp oils into irritating byproducts that trigger inflammation and accelerate shedding. That's why washing alone doesn't fix it — ordinary shampoo removes the flakes but leaves the yeast, which re-establishes within days.

Choosing an Anti-Dandruff Shampoo

The key is an active ingredient that tackles the yeast or the flaking — not just a "clarifying" shampoo:

Ketoconazole is the most evidence-based first choice for stubborn dandruff — see the ketoconazole shampoo guide.

How to Get Rid of It — Step by Step

1. Choose the right shampoo. For persistent dandruff, a ketoconazole shampoo is the evidence-based first choice.
2. Use it correctly. Apply to wet hair and leave it on for the full contact time (usually 3–5 minutes) before rinsing — this is the step most people skip.
3. Be consistent. Use twice weekly for the first 4 weeks, then switch to once-weekly maintenance.
4. Keep up maintenance. Don't stop entirely when flakes clear — weekly use stops the yeast re-establishing.
5. Address contributing factors. Manage stress where you can, avoid very oily or heavy styling products, and rinse well after exercise.
6. Escalate if needed. If OTC shampoo isn't enough after ~6 weeks, a prescriber can step you up.

Self-Care That Helps

• Wash regularly with your medicated shampoo — skipping washes lets oils and yeast build up.
• Manage stress, which is a well-documented dandruff aggravator.
• Go easy on heavy oils, waxes and alcohol-heavy styling products.
• Don't scratch — it worsens irritation and the itch-scratch cycle.
• Get some daylight where practical; many people notice dandruff eases in summer.

Common Myths

• "Dandruff means poor hygiene." No — it's a reaction to a normal scalp yeast, not dirt.
• "Washing more often will cure it." Only if you use a medicated shampoo correctly; plain shampoo won't clear the cause.
• "It's the same as a dry scalp." Not quite — dandruff involves yeast and inflammation, not simply dryness.
• "Dandruff causes baldness." It doesn't directly cause hair loss, though heavy scratching can temporarily weaken hair.

When to Escalate

Speak to a prescriber if anti-dandruff shampoo hasn't worked after about 6 weeks, if your scalp is significantly red, sore or inflamed, if the scale is thick and well-defined (which can signal scalp psoriasis), or if flaking spreads onto your face and ears. Options then include prescription ketoconazole 2% and, for inflammation, a short course of a scalp steroid — see stubborn dandruff.