Is dandruff caused by a dry scalp or poor hygiene?
Neither, usually. Classic dandruff arises on an oily scalp — the yeast feeds on sebum — and affects the scrupulously clean as readily as anyone. True dry-scalp flaking exists (fine, powdery, tight-feeling) but the greasy, yellowish, itchy flake pattern is yeast-driven. The distinction matters because the folk remedy for one (heavy oiling) actively worsens the other.
Why does oiling my scalp make it worse?
Malassezia eats scalp oils. Leaving coconut or other oils on overnight lays out a banquet — many patients’ ‘stubborn dandruff’ improves remarkably just by stopping overnight oiling. If oiling is culturally important to you, we’ll suggest the compromise: brief pre-wash application, washed out fully the same hour.
Which shampoo actually works — and how should I use it?
Evidence ranking: ketoconazole 2% leads the trials; zinc pyrithione, selenium sulphide and ciclopirox are proven alternatives; coal-tar and salicylic-acid formulas help scale. The technique matters as much as the bottle: lather onto the scalp (not just hair), leave 5 minutes of contact time, use 2–3 times weekly until controlled, then once weekly-to-fortnightly as maintenance. Most ‘shampoo failures’ are 30-second rinses of a correct shampoo.
How long until it’s controlled — and will it come back?
Visible control typically in 2–4 weeks of correct use; stubborn seborrheic dermatitis takes 4–8. And yes — it relapses, because the yeast remains a resident: stress, heat, sweat, winter, illness and stopping maintenance all invite it back. Maintenance washing keeps most people effectively clear; flares are managed with a short step-up, not despair.
My dandruff flares when I’m stressed — am I imagining it?
No — stress-linked flaring of seborrheic dermatitis is well documented (immune and sebum changes both plausible mechanisms). It’s also why our programme addresses the sleep-stress cluster — including Shirodhara for the genuinely wound-up — alongside scalp treatment, and why exam seasons and new jobs so often star in patients’ timelines.
Does dandruff cause hair fall?
Indirectly, it can: chronic scalp inflammation and vigorous scratching push follicles toward shedding, and studies associate persistent seborrheic dermatitis with increased hair fall. Controlling the scalp calms the shedding — one reason we treat scalp health and hair loss as one programme rather than two problems.
What about the flakes in my eyebrows and beside my nose?
Same condition, favourite real estate — seborrheic dermatitis loves oil-rich zones: eyebrows, nasal folds, behind ears, beard, mid-chest. Facial areas are treated with gentler antifungal creams and short courses of mild anti-inflammatories rather than scalp-strength products — one of the details that separates a plan from a shampoo purchase.
When does scalp flaking need a doctor rather than a shampoo?
See us (or dermatology) when: flaking resists 4-6 weeks of correct medicated-shampoo use; the scalp shows thick, silvery, sharply-bordered plaques (possible psoriasis — different treatment); patches are red, weeping or painful (possible infection or eczema); there’s hair loss with scarring-looking patches; or an infant/immunocompromised person is affected. Dandruff itself is never dangerous — but its stubborn mimics deserve accurate diagnosis, and no surgery is ever part of this condition’s story.
