Q: How does Head & Shoulders Classic Clean 2 in 1 work? A: The active ingredient in Head & Shoulders is pyrithione zinc (ZPT). When used regularly to wash hair, it removes scalp irritants like flakes and oil buildup and helps prevent them from returning, protecting your scalp from the effects of dandruff.

Our 2-in-1 range is specially formulated to have all the dandruff fighting power you expect, while combining the benefits of both shampoo and conditioner. Like all our products, Head & Shoulders 2-in-1 uses zinc pyrithione to help control the symptoms and causes of dandruff.

Dandruff shampoo like Head & Shoulders is safe to use and may help clear up acne for specific skin types including those with fungal acne, however, dermatologists do not recommend using it if you have bacterial acne or traditional acne breakouts.

It is especially formulated to rescue your hair from dandruff and hair fall. The combined benefit of both shampoo and conditioner in one bottle reduces breakage and gives you up to 10X stronger hair.

Classic Clean Shampoo Dermatologically tested and clinically proven to be effective, while gentle enough to be suitable for daily use.

Head and Shoulders Classic products contain pyrithione zinc. They are intended for daily use and are the best options if you have mild-to-moderate dandruff. Head and Shoulders Clinical Strength products contain selenium sulfide. These are applied less frequently and are your best bets if you have severe dandruff.

Do Head and Shoulders products damage your hair? No, there is very little evidence that suggests Head and Shoulders products could cause damage to your hair. In fact, research has shown that these products may help work to improve hair and scalp health when used as directed.

There's no limit to how often you can use Head & Shoulders – it's pH balanced and gentle on hair, so you can use it every day.

Allergic reactions – This is one of the most common side effects of hair sprays, as your body might react to the chemicals in the spray. This can lead to breakouts on your scalp and even lead to skin damage.

"The only downside to using a 2-in-1 is that the hair can begin to feel heavy over time," says Cardona. "Occasionally alternating to a clarifying or exfoliating shampoo rather than a conditioning shampoo will let you reap all the benefits of silicones without the unwanted buildup."

Head and Shoulders Classic products contain pyrithione zinc. They are intended for daily use and are the best options if you have mild-to-moderate dandruff.

This testing is part of our commitment to your safety when using one of our anti-dandruff shampoos or conditioners. For flake-free* and healthy-looking hair, use Head & Shoulders Classic Clean shampoo. It's also paraben free and gentle on your hair, so you can use it every day.

• Neutrogena T/Gel Extra Strength Therapeutic Shampoo.
• Nizoral Anti-Dandruff Shampoo.
• DHS Zinc Shampoo.
• Dermacare Scalp Anti-Dandruff Shampoo.
• Mustela Cradle Cap Foam Shampoo.
• Acure Buildup Balancing Hemp & ACV Shampoo.
• REfresh Anti-Dandruff Shampoo.

Head & Shoulders contains an active ingredient to protect you from Malassezia globosa, allowing you to fight back against dandruff and the symptoms. But we also have the technology to make sure you don't have to compromise on having soft, silky hair as well.

There is no solid research showing classic Head and Shoulders shampoo causes hair loss. In fact, most studies show it can improve hair growth in some people with severe dandruff. That's because this treatment can help improve the health of your scalp, an essential part of healthy hair (Mangion, 2021).

"The only downside to using a 2-in-1 is that the hair can begin to feel heavy over time," says Cardona. "Occasionally alternating to a clarifying or exfoliating shampoo rather than a conditioning shampoo will let you reap all the benefits of silicones without the unwanted buildup."