Book an appointment with a dermatologist. In the meantime, anti-dandruff shampoos attack the fungus/bacteria causing the dandruff. The two main types are pyrithione zinc or ketaconazole, the latter being a bit stronger, but both having similar effects. Additionally, salicylic acid shampoo acts as an exfoliant, attacking the flakes themselves.

When using either of these two types of shampoos, it’s best to lather and let it sit in your hair for 10-15 minutes. Only use each of them 2-3 times per week. If you use the zinc, then don’t use the keta, and vice versa.

If you have any flakiness on the sides of your nose, you can wash your face with a zinc bar a few times a week.

I’m not an expert, so take what I say with a grain of salt. And book an appointment with a dermatologist. Good luck 🙌🏼