Excessive dandruff all of a sudden?

[Jellyeggz]

Has anyone got any idea what might be the cause? Nothing has changed in my environment, diet or products I use.

I’ve never had dandruff before and now I can’t brush my hair without having white flakes peppered throughout my long hair

Not sure it maybe a dry scalp, how long have you had it for? Try head and shoulders they are usually quite good at it and google will probably be able to help better than me. Keep an eye on it though, you don’t have any other symptoms?