What is the best over-the-counter treatment for dandruff? Scientists from Head & Shoulders Shampoos and dermatology experts reviewed evidence at the September 2026 Science of Skin Summit in Austin, TX, suggesting the best treatments must go beyond anti-fungal benefits to reduce scalp irritation and improve scalp’s health – providing sustained dandruff control over time.
These three holistic benefits are uniquely found in Head & Shoulders Shampoos’ proprietary shampoo collections, which are designed to break the cycle of dandruff over time through patented zinc pyrithione and proprietary selenium sulfide formulations. This supports why Head & Shoulders is the #1 dermatologist recommended anti-dandruff brand.
Benefits of Head & Shoulders Shampoos for Dandruff Control
The review of available clinical evidence concludes:
- A well-formulated shampoo containing 1% selenium sulfide has the strongest evidence-based case for maximum OTC dandruff control over 1% ketoconazole
- A well-formulated shampoo pairing 1% zinc pyrithione with barrier-building and antioxidant ingredients – like Head & Shoulders’ HydraZinc complex – shows clinically meaningful improvements in dandruff symptoms, scalp barrier quality, underlying irritation and long-term dandruff management.
“Therapies that address multiple dimensions of scalp health and irritation may provide advantages over reliance on antifungal potency alone,” said Dr. Divya Shokeen, board-certified dermatologist and hair transplant surgeon. “When considering currently available OTC evidence, a well-formulated product with 1% selenium sulfide has the strongest efficacy data for maximum dandruff control, while zinc pyrithione demonstrates important benefits in reducing scalp irritation and maintaining scalp health over time.”
While visible flakes remain the most recognizable symptom of dandruff, research increasingly shows that affected scalps exhibit measurable changes in barrier integrity, oxidative stress, and inflammation. A new Viewpoint article published in JAMA Dermatology in August 2026 highlights the complex interaction of scalp microbiome imbalance, barrier dysfunction, irritation, and inflammation that leads to dandruff and seborrheic dermatitis.
Multiple clinical studies have demonstrated that both selenium sulfide- and zinc pyrithione-based shampoos provide anti-fungal benefits, reduce scalp irritation, and improve scalp health.
Strongest Available Evidence Supports 1% Selenium Sulfide for Maximum OTC Dandruff Control
A series of randomized clinical studies provides a consistent evidence chain supporting selenium sulfide as the strongest evidence-based OTC option for dandruff control:
- A 350-participant randomized, double-blind study found that a tested 1% selenium sulfide shampoo reduced adherent scalp flaking more than a tested 2% ketoconazole shampoo after 4 and 6 weeks of treatment.
- A separate randomized study involving individuals with severe dandruff or seborrheic dermatitis found 2% ketoconazole significantly outperformed 1% ketoconazole for reducing flaking severity. No identified published study has directly compared 1% selenium sulfide and 1% ketoconazole shampoos under identical conditions.
- Additional clinical evidence demonstrated that an OTC selenium sulfide shampoo achieved efficacy comparable to prescription-strength ketoconazole for reducing scaling and irritation severity.
Taken together, the available evidence suggests that well-formulated 1% selenium sulfide shampoos represent the strongest evidence-based OTC option when maximum dandruff control is the primary treatment objective.
Zinc Pyrithione Offers Proven Performance for Long-Term Management
Dandruff is generally a chronic, recurring condition, so sustained performance matters.
A 48-week randomized controlled study demonstrated that a 1% zinc pyrithione shampoo maintained significant efficacy versus placebo throughout the full study period with no evidence of diminished response over time. Additional research has shown benefits for scalp barrier quality and scalp health biomarkers during ongoing use.
“The best dandruff shampoo is one that people will use consistently over time,” said Dr. KC Locker, Head & Shoulders Senior Scientist. “That is why evaluating products, rather than active ingredients in isolation, is so important. Effective dandruff management requires comprehensive scalp treatment and a product experience that supports continued use.”
What Consumers Should Know
- For maximum OTC dandruff control: Available data supports a well-formulated 1% selenium sulfide shampoo, such as Head & Shoulders Clinical Strength, as the strongest evidence-based OTC option.
- For long-term scalp maintenance: Across multiple clinical studies, zinc pyrithione-based Head & Shoulders products, now with the patent-pending HydraZinc ™ technology, have demonstrated sustained efficacy in reducing scalp irritation, hydrating the scalp barrier, and eliminating visible flakes – breaking the cycle of dandruff.
- For overall scalp health: Effective treatment should address visible flakes, scalp barrier quality, irritation, and ongoing symptom management. Dandruff and scalp flaking are generally chronic conditions, and Head & Shoulders is well-tolerated and safe to use as directed every day over time.
- For real-world results: Consumers should use products according to label directions and consider the complete formulation, not only the active ingredient. Consistent use remains a critical factor in treatment success.
Consumers should consult a healthcare professional when symptoms are severe, persistent, markedly inflamed, or fail to improve with appropriate OTC treatment. More Head & Shoulder Shampoos here.