Viton hair dye 3N or 2N, which is more suitable for the elderly around 60 years old? I want to buy a hair dye for my mother recently. It is said that Weitong is not bad?

Weitong hair dye is a natural plant-powered healthy hair dye, and my mother is also using it. The whitening effect is great. My mother uses 2N natural black, which is pure black, because my mother likes the bright feeling of black. 3N is brown-black, that is, black with a little brown, which looks closer to natural hair color. How to choose mainly depends on what color your mother prefers.