I have a very sensitive scalp, but I need to color my hair every month to cover greys. In the past, every coloring session left my scalp itchy and sometimes caused dandruff. Recently, a friend recommended Zeva, so I tried their color service.At Zeva, they used hair color brands with fewer allergy-causing chemicals. Before coloring, the stylist applied a thick layer of scalp protection and was very careful to avoid getting excess color on my scalp. This thoughtful approach made a huge difference—my scalp felt comfortable and completely itch-free after coloring for the first time!