Why doesn't grey hair hold hair coloring for very long?

It is driving me crazy.

Why doesn't grey hair hold hair coloring for very long?

because it is like a paint brush with no bristles to hold the paint. it is empty and can't hold color and the more we try to color it the more damaged it becomes.

Why doesn't grey hair hold hair coloring for very long?

And I thought I was the only one..I do not have the answer, but very curious to see what the experst have to say.

Good question.

Why doesn't grey hair hold hair coloring for very long?

the same reason why it doesnt hold your natural color anymore its a dying and its doesnt work like it used to

Why doesn't grey hair hold hair coloring for very long?

There's no more pigment (color) left in the medulla. Grey hair is also resistant because of lack of pigment(color).

Why doesn't grey hair hold hair coloring for very long?

because you need to use permanent color on your hair so it change actually change the melanin in your hair permanently..otherwise you can consider just grey "blending"

Why doesn't grey hair hold hair coloring for very long?

What do you consider "very long"? If that is after 3-4 weeks what you are looking at is regrowth. If it is much less than that time, it is a problem with the formulation, application, timing or aftercare.