I'm gonna go out on a limb n say it's probably cuz of dandruff or sth similar, I suggest u try using a shampoo or sth prescribed by a pharmacist, I'm saying all this from personal experience ofc. Ena menekakel demo it's normal tektek yale tsegur kaleh, if u google it, it's gonna say cuz of dryness mnamn gn Paraffin or sht betetekemem it's bound to happen