If you are experiencing an itchy scalp, it is important to assess your scalp condition accurately and take note of any and all ingredients that may be posing irritation risks for your scalp. Many factors contribute to itchy scalp, such as environment and pollution, build-up, dandruff, and sensitivities. Furthermore, some hair profiles may find their scalps become itchy if they go too long between washes, so you may wish to try experimenting with more frequent shampooing.