I think it's better to go to the barber shop if you want to dye your whole head, because after all, there are some places that we can't reach ourselves, and the color will be different. The time to dye your hair depends on the amount of hair, so you need the professional skills of the barber shop to do it. But if it's highlight dyeing, I suggest that it's better to do it at home, wear a shower cap, pick out the parts to be highlighted and apply hair dye cream, which is very convenient and quick. In fact, our skin in China is not very white. If the skin is not very white, it will be better to brighten the skin color with hair dye. Some of my classmates have tried, and your face looks much whiter. And some people say that if the skin is red or yellow, chestnut brown is suitable for people with red skin color and chestnut gold is suitable for people with yellow skin color.