That ' s a whole lot of ass <| sep |> I hope this doesn ' t come across as pedantic , but have you tried fully resetting your xbone ? <| sep |> So how did you do it ? The ol formula on a calculator , hiding paper in your sleeves , answers in your pencil case or my personal favourite Stuff it in your underwear and going to the toilet for a dump halfway through the exam . <| sep |> What concentration did you use ? Did you use your normal shampoo with it ? Conditioner ? The dandruff could be from a lack of moisture , especially if you didn ' t condition like normal . I used baking sodaACV for about two years and noticed I did have some dandruff but in retrospect it was likely from a lack of moisture on my scalp . That being said , if you ' re using drugstore conditioner , they tend to seal dead skin cells to the scalp with silicones and filler which may artificially prevent cell shedding . The ACV could have loosened this and caused some dandruff .