Is dandruff a bacteria?

I was actually looking this up yesterday! Dandruff is caused by a fungus called Malassezia, not bacteria. It feeds on the oils on our scalp, which is why oily hair usually gets more dandruff.

Don't listen to random people online calling dandruff a bacterial infection and telling you to apply garlic paste or weird acids. Go verify this with a real dermatologist. They will give you a proper antifungal shampoo that actually works.

I totally get it, when we see white flakes we start worrying if it is some sort of bacterial infection or contagious disease. Don't worry, it is just a very common fungal reaction and completely harmless. A simple zinc pyrithione shampoo can clear it up.

No, dandruff is caused by a yeast-like fungus, not bacteria. Regular hair washing helps.

It is a common myth, but dandruff is not a bacterial infection. It is mostly due to an overgrowth of a normal fungus that lives on everyone's head. Just keep your scalp clean, wash your comb regularly, and it will stay under control.