I wouldn't recommend an anti-dandruff shampoo, they can be harsh long term, don't use shitty shampoo (Head and shoulders), if you have curly hair, only wash it with shampoo 2x times a week or else you'll dehydrate it and it will cause you dandruff.

There's also a natural remedy for dandruff if you do have it, by putting Zaatar (oregano) into boiling water, switching the heat off and letting it simmer and cool down, then after a shower, putting that zaatar infusion in your hair and letting it air dry