Generally speaking, dandruff shampoo will not strip hair color. The ingredients in dandruff shampoo are designed to reduce scalp irritation, not to lighten or strip hair color. However, some people have reported that dandruff shampoo can cause hair color to fade over time, so it is best to be cautious when using it. Additionally, using a deep conditioner or hair mask once or twice a week can help keep your hair color from fading.