An anti-dandruff shampoo is a strange thing to find on a hair-loss regimen, yet ketoconazole keeps showing up in dermatologists’ recommendations.
What It Is
Ketoconazole is an antifungal, sold over the counter at 1% (Nizoral and generics). It’s a proven dandruff treatment; its hair-loss reputation comes from a side benefit.
Why It May Help Hair
It calms scalp inflammation and fungal overgrowth, and appears to have mild anti-androgen activity at the scalp. Small studies found it improved hair density comparably to low-strength minoxidil.
How to Use It
Use it 2–3 times a week, lather, and leave it on the scalp for 3–5 minutes before rinsing. Use your normal shampoo on off days.
Where It Fits
Ketoconazole is a stack member, not a headliner — best alongside minoxidil, a near-free multiplier that also fixes flaking and itch.
The Bottom Line
Ketoconazole shampoo is one of the highest-value, lowest-effort additions to a hair-loss routine.
Informational only, not medical advice.