What type of dandruff do I have? A guide to the 5 types and the right treatment for each
Quick Answer Summary
The short version before you read on
Why your anti-dandruff shampoo stopped working
Most anti-dandruff shampoos work by suppressing Malassezia, the yeast responsible for fungal dandruff. They work while you use them, but the moment you stop, the yeast population rebounds and symptoms return because the underlying scalp environment hasn't changed. If your dandruff is dry-scalp driven rather than fungal, anti-dandruff shampoos actively make it worse by stripping further moisture. Knowing your type determines whether you need antifungal action, moisture restoration, or both.
The 5 types, and why they need different approaches
Fungal (seborrhoeic dermatitis), yellowish oily flakes, persistent itch, driven by Malassezia overgrowth. Needs antifungal treatment. Tea Tree Oil is the most evidence-backed natural option. Dry scalp, fine white flakes, tight scalp, worse in winter. Needs moisture restoration, not antifungal. Oily scalp, waxy thick flakes, greasy hair within a day of washing. Needs frequency and gentle sebum control. Beard dandruff, same mechanism as fungal but on facial skin, needs gentler approach. Mixed, combination of patterns requiring a flexible routine.
The essential oil approach, why it works
Tea Tree Oil's terpinen-4-ol content has documented antifungal activity against Malassezia in multiple clinical studies. Lemongrass Oil was specifically studied for dandruff in a 2015 hair tonic study and found significantly effective. Adding 3–4 drops of either oil to your shampoo dose before washing is the most practical delivery method, it provides targeted antifungal or conditioning action without the harshness of dedicated anti-dandruff shampoos, and allows you to adjust based on what your scalp needs day to day.
When to see a doctor
Most dandruff responds to the right routine within 4–8 weeks. See a dermatologist if: dandruff is spreading beyond the scalp to the face or body, there is significant redness, inflammation, or crusting, symptoms haven't improved after 8 weeks of correct treatment, or hair loss is accompanying the dandruff (which suggests a different underlying condition). Seborrhoeic dermatitis affecting the face or body sometimes requires prescription-strength antifungals.
In this article
Dandruff affects over 50% of adults at some point, making it one of the most common scalp conditions globally, and one of the most persistently undertreated. The reason most people cycle through product after product without resolution is simple: they are using the right treatment for someone else's dandruff type. Dry scalp dandruff and fungal dandruff look similar but require opposite approaches. Using an anti-dandruff shampoo on dry scalp dandruff makes it worse. Using a moisturising shampoo on aggressive fungal dandruff fails to address the cause.
This article breaks down the five types, explains what is happening in each, and provides a finder that identifies your specific pattern, with a personalised routine and product protocol as the output.
The five types of dandruff, explained
Fungal dandruff (seborrhoeic dermatitis). The most common type, estimated to affect 3–5% of the population in its clinical form, with many more experiencing subclinical levels. Caused by Malassezia yeast overgrowth, which is triggered by high scalp sebum and produces oleic acid that irritates the scalp, causing accelerated skin cell turnover. Flakes are yellowish, large, and oily-looking. The scalp is itchy and inflamed. Symptoms return reliably after stopping anti-dandruff shampoos because the shampoo suppresses the yeast without changing the sebum environment that feeds it.
Dry scalp dandruff. Not fungal, a moisture problem. The scalp's lipid barrier is compromised, leading to dry flaking that looks like dandruff but has a completely different cause. Flakes are fine, white, and fall off easily rather than clumping. The scalp feels tight rather than itchy. Worst in winter, in air-conditioned environments, and after harsh shampoo use. Conventional anti-dandruff shampoos make this significantly worse by stripping further moisture; this is the most common mistreatment error in dermatology.
Oily scalp dandruff (seborrhoeic with excess sebum). A hybrid, overactive sebaceous glands produce excess sebum that feeds Malassezia, creating both the greasy scalp environment and the fungal overgrowth simultaneously. Flakes are thick and waxy, stuck to an oily scalp. Hair becomes greasy within a day of washing. Driven by a combination of genetics, hormones, diet (high glycaemic index foods increase sebum production through insulin signalling), and washing habits.
Beard dandruff (beardruff). Seborrhoeic dermatitis on facial skin beneath the beard, the same Malassezia mechanism as scalp dandruff, but requiring a gentler approach because facial skin is more sensitive. Can extend to eyebrows, the sides of the nose, and the ears, the characteristic distribution of seborrhoeic dermatitis on the face.
Mixed type. A combination of oily in some areas (typically the crown and hairline) and dry in others (typically the temples and nape), or symptoms that shift seasonally. Requires a flexible routine that can address both components rather than a single-product approach.
| Type | Flake appearance | Scalp feel | Approach |
|---|---|---|---|
| 🍄 Fungal | Yellowish, oily, clumpy | Itchy, inflamed | Tea Tree Oil + Daily Drench |
| ❄️ Dry scalp | Fine, white, powdery | Tight, dry | Argan Shampoo + Lemongrass Oil |
| 💦 Oily | Thick, waxy, stuck | Greasy, congested | Daily Drench + Tea Tree Oil |
| 🧔 Beard | Small flakes in facial hair | Itchy under beard | Tea Tree + Lemongrass in carrier oil |
| 🔄 Mixed | Varies by area | Oily in some areas, dry in others | Alternate both shampoos + both oils |
What type of dandruff do I have? The finder
Answer 7 questions about your flakes, scalp, lifestyle, and previous treatment response. The finder identifies your type and gives you a specific routine, including which essential oil to add to which shampoo and how.
Tea tree vs lemongrass, which essential oil for which type?
Tea Tree Oil, the antifungal specialist. Tea tree oil's primary active compound, terpinen-4-ol, has documented activity against Malassezia in multiple in vitro and clinical studies. A 2002 randomised controlled trial published in the Journal of the American Academy of Dermatology found 5% tea tree oil shampoo significantly reduced dandruff severity compared to placebo. Its mechanism is direct antifungal, it disrupts the cell membranes of Malassezia and other fungi. Best used for fungal dandruff, oily dandruff, and beardruff where the Malassezia component is dominant. Satthwa Tea Tree Essential Oil, add 3–4 drops to your shampoo dose per wash.
Lemongrass Oil, the scalp conditioner with antifungal properties. Lemongrass has both antifungal and astringent properties, it was specifically studied for dandruff in a 2015 hair tonic study that found significant reduction in dandruff with consistent use. Its antifungal mechanism is different from tea tree's, lemongrass works through its citral and geraniol content, which have documented activity against fungal organisms while also providing conditioning and sebum-regulating effects. Best used for dry scalp dandruff (conditioning + mild antifungal) and mixed type. Satthwa Lemongrass Essential Oil, add 3–4 drops to your shampoo dose per wash.
The add-in method, why it works better than adding to the bottle
Add essential oils to your shampoo dose in your palm before applying, not into the shampoo bottle. This gives you three advantages: you can switch oils based on what your scalp needs on a given day, the essential oil stays potent (it doesn't oxidise sitting in a bottle with shampoo for weeks), and you can adjust the number of drops based on severity without reformulating the whole bottle. 3–4 drops per wash is the standard dose. On severe days, 5 drops is fine. Never add more than 8 drops per wash, concentrated essential oils can irritate the scalp at high levels.
Which shampoo for which type, and the add-in method
Satthwa Daily Drench, pH 5.5, mild, for frequent washers and fungal/oily types. For fungal and oily dandruff, washing frequency matters; these types benefit from more frequent washing (daily to every other day) to control sebum and remove Malassezia food sources. But frequent washing with a harsh shampoo strips the scalp barrier and triggers sebum rebound. Daily Drench's pH 5.5 formula is gentle enough for daily use without the rebound cycle. It is the correct base for the Tea Tree Oil add-in method for fungal and oily dandruff.
Satthwa Argan Oil Shampoo, conditioning, Neem extract, for dry and normal-frequency washing. For dry scalp dandruff, the shampoo itself needs to restore rather than strip. The Argan, Jojoba, Avocado, and Almond oil content in this shampoo conditions the scalp while cleansing, addressing the lipid barrier deficit that causes dry dandruff. The Neem extract also provides mild antimicrobial action. Used 2–3 times per week maximum with Lemongrass Oil add-in, this is the correct approach for dry scalp dandruff. It is sulfate and paraben free.
Frequently asked questions
The bottom line
Dandruff is not one condition and does not have one treatment. The most common reason it persists is misidentification of type, and therefore mismatched treatment. The finder above gives you a specific type identification and a protocol tailored to it. The essential oil add-in method, Tea Tree for fungal and oily types, Lemongrass for dry and mixed, is the most flexible, gentle, and evidence-supported natural approach available. The right base shampoo for your frequency and type completes the routine. Give it 6 weeks of consistency before assessing.
