I don't know about candida, but I've had (a normal) itchy scalp in the past. I found that manganese (as in Swanson Albion Chelated Manganese 40mg capsules) corrects that problem. I only need part of a capsule daily..perhaps 4mg. Another thing about manganese, the more vegetable oils...like coconut,peanut,avacado oils you consume, the more you need manganese. Manganese is also the magic ingredient I found necessary to stop all Acne
outbreaks...but for Acne
I also need/take evening primrose or borage oils,zinc gluconate,biotin, some vitamin A rich food. Back to the itch...with the manganese, scalp itch no longer dictates how often I need to wash my hair. I admit if I wear a baseball cap on a hot/sweaty day, my scalp will itch..but I consider that normal...wear a cowboy hat instead !