Dandruff & Scalp Seborrheic Dermatitis Treatment
A practical shampoo routine to control flakes, itch, and scalp redness — with a simple maintenance plan to prevent relapse.
Scalp seborrheic dermatitis (dandruff) is extremely common. It isn’t caused by poor hygiene, but it does need a consistent routine. The biggest reason people don’t improve is that the shampoo is either not used often enough, or it’s rinsed off too quickly to work properly. (1–3)
[Book appointment] (Seborrheic Dermatitis Consultation)
Key takeaways
- Use a medicated shampoo 2–3 times per week initially, and leave it on 3–5 minutes before rinsing. (2–5)
- If your scalp is oily or very flaky, more frequent washing can help — scale build-up makes seb derm worse. (2,3)
- Maintenance matters: once controlled, keep it quiet with 1× weekly (or every 1–2 weeks) medicated shampoo. (2,3)
- If you have thick scale, add a scale-lifting step (salicylic acid shampoo or softening overnight treatment). (6,7)
Related pages:
- Seborrheic Dermatitis (Hub Page)
- Facial Seborrheic Dermatitis (Nose/Eyebrows/Eyelids): Treatment Plan
- Prescription Treatments & Maintenance Plans
- If your main issue is facial redness/flushing: Rosacea: Treatments for Rosacea (Facial Redness)
Jump links
- The 4-week scalp protocol (step-by-step)
- Which medicated shampoo should I choose?
- How to rotate shampoos (when one stops working)
- Thick scale: how to lift it safely
- Hair type tips (oily vs dry hair)
- When to see a doctor
- FAQs
- Book
The 4-week scalp protocol (step-by-step)
This is the simplest plan that works for most adults.
Step 1 — Choose ONE primary medicated shampoo
Pick one active ingredient to start (see options below). Use it 2–3 times per week. (2–5)
Step 2 — Use it correctly (this is the whole game)
1.Wet scalp thoroughly
2.Massage shampoo into the scalp (not just the hair)
3.Leave on 3–5 minutes
4.Rinse well
5.Conditioner is fine — keep it mainly on hair lengths, and rinse thoroughly. (4,5)
Step 3 — Wash regularly between medicated washes
On the other days, use a gentle regular shampoo if needed to prevent oil/scale build-up. Infrequent washing often worsens dandruff in people with seborrheic dermatitis. (2,3)
Step 4 — Reassess at 3–4 weeks
Most people see meaningful improvement within a few weeks if the routine is consistent. (2,3)
Step 5 — Maintenance (to stop relapse)
Once controlled, continue your medicated shampoo:
- once weekly, or
- every 1–2 weeks (depending on how quickly it returns). (2,3)
Which medicated shampoo should I choose?
These are the main evidence-based actives used for dandruff/seborrheic dermatitis:
Ketoconazole (antifungal)
A common first choice because Malassezia yeast plays a major role in seb derm. (1–3)
Example product available in Australia: Nizoral 2% treatment shampoo. (4,8)
Selenium sulfide
Helps reduce yeast and slows flaking.
Example: Selsun Gold contains selenium sulfide 2.5%. (9,10)
Zinc pyrithione
Common in anti-dandruff shampoos and can be effective for ongoing control. (3)
Coal tar
Helps slow scale build-up; can be useful for stubborn scalp flaking. (3)
Salicylic acid / sulfur (scale-lifting)
These help lift and loosen scale so medicated shampoos can reach the scalp better. (6,7)
Piroctone olamine
A widely used anti-dandruff ingredient in some “sensitive scalp” products.
Example: Dercos Anti-Dandruff Shampoo for Sensitive Scalp lists piroctone olamine. (11)
You don’t need all of these at once — one good protocol consistently beats a cupboard full of half-used shampoos.
How to rotate shampoos (when one stops working)
Some people get best results by rotating actives, especially if dandruff returns quickly.
A simple rotation strategy:
- Primary antifungal (e.g. ketoconazole) 2× weekly
- Scale-lifting shampoo (e.g. salicylic acid) 1× weekly
- Gentle regular shampoo on other days as needed (6,7)
If your scalp settles, step down to maintenance:
- ketoconazole (or your chosen active) once weekly or fortnightly. (2–5)
Thick scale: how to lift it safely
If you have stubborn, adherent scale, shampoo alone can struggle because it can’t reach the scalp properly.
Options that help:
- Add a salicylic acid shampoo 1–2× weekly to loosen scale (6,7)
- In very thick build-up, apply a scale-softening product overnight and wash out in the morning (for some people this may be a mineral-oil based scalp softener or a product designed for scale removal). (2,3)
Avoid aggressive scratching or picking — it irritates the scalp and can worsen inflammation.
Hair type tips (oily vs dry hair)
If your scalp is oily
More frequent washing can help — oil and scale build-up often worsens dandruff. (2,3)
If your hair is dry/curly/treated
You can still treat the scalp while protecting hair length:
- focus medicated shampoo on the scalp
- use conditioner on mid-lengths/ends
- alternate medicated shampoo days with a gentle shampoo as needed.
When to see a doctor
Book a review if:
- you’ve followed the protocol properly for 3–4 weeks with minimal improvement
- scalp is very red, sore, or weeping
- you have thick plaques that may be psoriasis
- there is hair loss, broken hairs, or concern for fungal infection (tinea)
- you need frequent strong treatments to stay stable. (1–3)
Some scalp conditions mimic dandruff and need different management.
For face/eyebrows/eyelids: Facial Seborrheic Dermatitis Treatment Plan
FAQ
How often should I use dandruff shampoo?
Start with 2–3 times per week, then step down to maintenance once stable. (2–5)
How long should I leave it on?
Most medicated shampoos work best when left on 3–5 minutes before rinsing. (4,5)
Can I use my normal conditioner?
Yes. Keep conditioner mainly on hair lengths and rinse thoroughly. (4,5)
Book an appointment
If your dandruff is persistent, your scalp is sore, or you’re not improving despite a proper routine, we can confirm the diagnosis and create a simple plan tailored to your scalp and hair type.
[Book appointment] (Seborrheic Dermatitis Consultation)
Clinics: Ivanhoe and Diamond Creek
References
1.DermNet NZ. Seborrhoeic dermatitis.
2.Australasian College of Dermatologists. Seborrhoeic dermatitis.
3.Mayo Clinic. Seborrheic dermatitis (overview).
4.Pharmacy Online (Australia). Nizoral 2% Anti-Dandruff Treatment — directions include leaving on 3–5 minutes and twice weekly use.
5.Patient.info. Seborrhoeic dermatitis leaflet — advises leaving anti-yeast shampoo on for ~5 minutes and using 2–3 times/week.
6.DermNet NZ. Shampoos — medicated shampoo actives (salicylic acid; selenium sulfide; zinc pyrithione; ketoconazole).
7.Fiona Stanley Hospital Dermatology (WA). Seborrhoeic dermatitis pre-referral guideline (medicated shampoos/keratolytics).
8.Chemist Warehouse (Australia). Nizoral 2% Anti-Dandruff Treatment Shampoo listing.
9.Selsun Australia. Selsun Gold (selenium sulfide 2.5%).
10.Chemist Warehouse (Australia). Selsun Gold listing (selenium sulfide 2.5%).
11.Chemist Warehouse (Australia). Dercos Anti-Dandruff Shampoo for Sensitive Scalp (lists piroctone olamine).