Best Dandruff Shampoo: 5 Picks by Active Ingredient

How do you choose the best dandruff shampoo for your scalp?

Read the active ingredient first. It is printed on the label under "Drug Facts", and it matters far more than the scent or the brand. Different actives are designed for different kinds of flaking.

• Ketoconazole. An antifungal ingredient. Nizoral lists 1% ketoconazole. It is a common first choice for classic white or yellow flakes with itch.
• Selenium sulfide. Designed to slow flaking and cut down the yeast linked to dandruff. The Head & Shoulders Clinical Strength bottle lists 1% selenium sulfide and is marketed for oil control and stubborn dandruff, so it suits a scalp that gets greasy fast.
• Salicylic acid. Loosens thick scale so it can rinse away. Look for it when flakes are built up and stuck to the scalp.
• Coal tar. Slows how fast skin cells build up. It has a strong smell and can stain light hair, so it is not for everyone.

Then think about how your scalp feels. If it is oily, a clarifying or oil-control formula usually feels better. If it is dry and tight, a hydrating formula like the CeraVe pick, sold as an itchy scalp treatment, may be gentler. Check the label of any bottle for its exact active before you buy.

Price per ounce matters too, because you will use this shampoo for weeks. Selsun Blue and the Head & Shoulders bottle both give you more than 10 ounces for under $10. Neutrogena T/Sal comes in a smaller bottle, which is handy for trying a new active before you commit.

For a deeper look at how each active works, read our anti-dandruff shampoo guide. If you are not sure how your hair texture affects washing frequency, our hair type chart helps.

How do you use dandruff shampoo so it works?

1. Wet your hair and scalp well. The shampoo needs to reach skin, not just hair.
2. Massage it into the scalp. Use your fingertips, not your nails. Scratching can make the scalp sore.
3. Leave it on for 3 to 5 minutes. This gives the active ingredient time to work. Wash your body or rinse your face while you wait.
4. Rinse fully. Leftover shampoo can add to itch.
5. Condition the lengths. Medicated shampoos can dry out the ends. Put conditioner on the mid-lengths and ends, not the scalp.

Follow the label on how often to use it. Many people start with a few washes a week and cut back once flakes settle. If one shampoo stops helping, rotate actives: alternate a ketoconazole shampoo with a selenium sulfide one, or use your medicated bottle on some days and a gentle regular shampoo on others.

When should you see a dermatologist?

Dandruff is common and usually responds to the right shampoo. See a dermatologist if your scalp is red, inflamed, bleeding or very sore, if thick scale or rash spreads past your hairline to your face, ears or neck, or if you see no change after several weeks of regular use. Also book a visit if you notice patchy hair loss. These signs can point to a different scalp condition that needs its own plan.

Questions people ask

How often should you use dandruff shampoo?

Follow the directions on the bottle. A common pattern is a few times a week at first, then once or twice a week to keep flakes away. Use a gentle regular shampoo on the days in between if you wash daily.

Can you use dandruff shampoo on color-treated hair?

Some formulas can fade color or dry out the ends. Focus the shampoo on your scalp, keep it off the lengths, and use a conditioner made for color-treated hair. Coal tar shampoos can tint light or gray hair, so check the label.

Is dandruff the same as a dry scalp?

Not quite. Dandruff flakes tend to be larger, oily and yellow or white, while a dry scalp sheds small, dry flakes and feels tight. A dry scalp often does better with gentle, hydrating care. Our dry skin treatment guide covers the basics.