Talking about dyeing hair and meeting black oil copywriting.

First of all, there is nothing wrong with your idea. Of course, you have to be willing to spend money. But some things are not so absolute. I've worked hard. I'll give you the potion. Since they have no problem dyeing their hair, you should give them money. I often dye my hair. I know that if your hair is dyed and you want to cover it with a new color, it will really be influenced by the previous color. So it's not the barber's fault. In fact, I think the barber shop should discuss with your wife whether to change a brighter color to cover up the past color after dyeing. At this point, I think they are indeed dereliction of duty. So I don't think they did their duty. But they used potions, and if you don't pay, people lose. After all, sometimes hair color is not a color that people can control, so it must be a color that you are satisfied with. Depending on the hair quality, some colors may not be exactly the same as the pictures. So I think they should only charge you for the potion, that is, pay half.