Dandruff Treatment: Causes & Solutions
Treat dandruff effectively with the right active ingredients. Understand causes and build a scalp-healthy routine.
Get a personalized solution →What Causes Dandruff?
Malassezia globosa fungus is the primary cause. This yeast naturally lives on the scalp and feeds on sebum, producing oleic acid as a byproduct. Some people are sensitive to this acid, triggering an inflammatory response and accelerated skin cell turnover.
Seborrheic dermatitis, a chronic inflammatory condition, causes more severe dandruff with greasy, yellowish scales and redness.
Dry scalp can mimic dandruff but produces smaller, white flakes without the oiliness or inflammation.
Product sensitivity or contact dermatitis from certain hair products can cause scalp irritation and flaking.
Infrequent washing allows oil and skin cells to accumulate, creating an environment where Malassezia thrives.
Signs You Have Dandruff
- White or yellowish flakes on the scalp and in hair
- Itching, especially at the crown and hairline
- Redness or irritation on the scalp
- Flakes visible on dark clothing
- Greasy or oily-looking scales (seborrheic dermatitis)
- Symptoms that worsen in cold, dry weather or during stress
How to Fix Dandruff: Step-by-Step
01Start with the Right Anti-Dandruff Shampoo
Use a shampoo with a proven anti-dandruff active: zinc pyrithione, ketoconazole, selenium sulfide, or pyrithione zinc. Rotate between two different actives to prevent the fungus from developing resistance.
02Leave the Shampoo On
Anti-dandruff shampoos need contact time to work. Leave the shampoo on your scalp for 3-5 minutes before rinsing. This allows the active ingredient to penetrate and treat the scalp effectively.
03Exfoliate the Scalp
Use a scalp scrub or shampoo with salicylic acid once a week to remove dead skin cell buildup. This helps anti-dandruff actives penetrate better and reduces visible flaking.
04Maintain Consistent Treatment
Dandruff is a chronic condition that can be managed but not cured. Continue using anti-dandruff shampoo 2-3 times per week even after symptoms improve to prevent recurrence.
05Moisturize the Scalp
After treating, apply a lightweight scalp moisturizer or toner. Anti-dandruff actives can be drying, and a dry, flaky scalp can look like dandruff even when the fungal issue is controlled.
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Best Products for Dandruff
Bondi Boost
Dandruff Repair Conditioner with 2% Salicylic Acid
$27.00
Bondi Boost
Dandruff Repair Shampoo with 2% Salicylic Acid
$27.00
Paul Mitchell
Dandruff Shampoo
$18.00
Verb
Dandruff Shampoo with Salicylic Acid for Dry and Flaky Scalp
$22.00
American Crew
Anti-Dandruff + Dry Scalp Shampoo
$17.00
Biolage
Scalp Sync Anti-Dandruff Shampoo
$7.50
Ingredients to Look For
Natural antifungal that reduces Malassezia growth
BHA that exfoliates dead skin cells and reduces scalp flaking
Restores scalp pH and has mild antimicrobial properties
Calms inflammation and strengthens the scalp barrier
Ingredients to Avoid
Heavy oils on the scalp
Feed the Malassezia fungus and worsen dandruff
Irritating fragrances
Can trigger contact dermatitis, worsening scalp flaking
Comedogenic ingredients near scalp
Clog follicles and contribute to buildup
Routine Adjustments for Dandruff
- Alternate between two different anti-dandruff shampoos with different active ingredients.
- Do not skip washes. Infrequent washing worsens dandruff by allowing oil and skin cell accumulation.
- Avoid scratching, which can cause scalp sores and spread irritation.
- Wash hats, pillowcases, and hair accessories regularly.
- Manage stress, which is a known trigger for dandruff flare-ups.
Want a complete routine built for your hair? Read our routine guide
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