Moderate evidence — ketoconazole shampoo calms scalp inflammation and may mildly help density, making it a solid add-on to proven treatments.
Ketoconazole is an antifungal that treats dandruff and seborrhoeic dermatitis, and several studies suggest it also supports hair shaft thickness and density — possibly via anti-inflammatory and mild anti-androgen action on the scalp. It's not a standalone cure for pattern loss, but the evidence for it as a helpful adjunct is better than for most 'natural' options.
Bottom line: a 2% ketoconazole shampoo (prescription) or 1% (over-the-counter) used 2-3 times a week is a low-risk, evidence-supported add-on — especially if you also have flaking or an itchy scalp. Combine it with minoxidil and/or finasteride rather than relying on it alone.
← Hair-Loss Ingredient Evidence Ratings
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FAQ
How often should I use ketoconazole shampoo?
Typically 2-3 times a week, left on the scalp for 3-5 minutes before rinsing. The stronger 2% needs a prescription in many countries; 1% is available over the counter.
Does Nizoral regrow hair?
It's best seen as a supporting treatment that improves scalp health and may help density, not a primary regrowth drug. Use it alongside minoxidil or finasteride for pattern loss.
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⚠️ When to see a doctor — don’t self-treat
- Sudden patchy or circular bald spots
- Redness, scaling, pus, pain or itch (possible scarring alopecia — treat urgently)
- Broken hairs or rapid loss
- Loss with body-wide signs (weight loss, fatigue, cycle changes, acne, extra hair)
- Loss right after a new medication
- Any hair loss in a child