I have mild dandruff please help!!!!!!!!?

i have mild dandruff im not sure if its dandruff but i have white flakes ONLY in the front side of my scalp (nearest to my face) so probably its when i wash my face in the morning the soap accumilates in that area? :/ so is it dandruff? i dont have it anywhere else in my scalp..i used anti-dandruff shampoo once today. how often am i to use to till its completely gone? and do u think vaseline would help? :D since its basically "dryness"