You can identify oily dandruff by touch before you look. The flakes are large, faintly yellow, slightly sticky, and they cling to the scalp and roots rather than dusting your shoulders. Hair goes greasy by the end of the first day. It is the most common presentation — and the most predictable to manage.
Why grease and flaking travel together
Malassezia, the yeast that lives on nearly everyone's scalp, feeds on components of sebum. The more active your oil glands, the more comfortably it multiplies. Its by-products irritate the skin, cell turnover accelerates, and the cells come away in sebum-soaked clumps. That is exactly what greasy scalp flakes are.
The triggers are anything that raises oil production or weakens the skin:
- Hormonal shifts, adolescence, stress
- Washing too infrequently, letting oil accumulate
- Water that is too hot, and stripping shampoos — both provoke rebound oiliness
- Conditioner and styling product landing at the roots
- Hats and helmets worn for long stretches without airing
A schedule that works
Rather than washing at random, run a fixed rhythm for a month:
- Two washes a week with a medicated shampoo containing zinc pyrithione or climbazole, left on the scalp for three to five minutes.
- One or two washes with a mild shampoo in between, conditioner on the lengths only.
- A clarifying shampoo every two or three weeks to clear product buildup.
- Dry shampoo at the roots on non-wash days, sparingly, brushed out properly.
After three or four weeks, drop the medicated shampoo to once weekly for maintenance.
How to wash oily hair with dandruff
The instinct is to wash less. Resist it — accumulated sebum is what the yeast is eating. Wash regularly, but change how:
- Warm water, never hot
- Massage with fingertips, not nails
- Two short lathers beat one long aggressive one
- Rinse until nothing feels slick at the roots
What makes it worse
Alcohol-based drying tonics, salt or bicarbonate scrubs, brushing "to distribute the oil" instead of washing, and using the same active for months without rotating it.
The line where this stops being cosmetic
If a month of consistent care changes nothing, or you develop red patches, crusting, weeping skin, flaking on the eyebrows, face or chest, or noticeable shedding, see a doctor or trichologist. Seborrhoeic dermatitis hides behind "oily dandruff" and responds to prescription treatment, not shampoo — and see a doctor for significant hair loss without waiting out the month.
Faberlic stocks shampoos for oily scalps, anti-dandruff formulas and mild everyday options for rotation; see the current catalogue on faberlic.com. For the broader routine, see the haircare guide.