What would cause someone's hair to not take dye?

My friend has wanted to dye her hair for a while and about a week ago she bought some hair dye that was fairly darker than her natural color (she's very blonde). She dyed several large chunks/strands all over her head to test the different shades in her hair and see how it looked. The color didn't take and she's dyed her hair three more times since then for a total of four times and her hair still won't take the dye.

On her latest attempt she tried a color much darker than her natural color and it tinted the hair but not enought to notice unless you knew it was there.

Does anyone know what the problem could be?

What would cause someone's hair to not take dye?

Her hair may not be damaged enough. I know this sounds odd but hair color takes better to porous, damaged hair. If she hasn't already, she may need to get her hair a lighter blonde before any dye will take.

Also if she's dying it herself she may not be putting enough dye in the right spots. From experience you have to REALLY coat it on to get any color in your hair.

What would cause someone's hair to not take dye?

she needs to go way way darker than she wats it then it will turn the color she wants it TRUST ME IT WORKS mine is the same

What would cause someone's hair to not take dye?

This may seem like a silly question, but did she follow the directions?

I'm a blonde naturally, and I dye my hair reddish-brown, and I've never had something like that happen to me. If she didn't leave the dye in long enough, then it won't work. Too, it could be the type of dye. Make sure it's a permanent dye and not a cheap brand.

What would cause someone's hair to not take dye?

Some hair is just very resistant to dyes..they can take up to 50 minutes to activate. This is especially true for gray hair.

Some hair stylists recommend softening your gray hairs to accept color better. Maybe it would work for blonde hair also?

To do this, use a 20% peroxide solution from any beauty supply shop. Apply the peroxide and comb it through the areas where you have gray hair. This may lighten surrounding hair coloring, too.

Wait five or ten minutes--no longer--and rinse it off. Blot your hair dry with a towel; wet hair dilutes hair color and you won't get the best results later.

Finally, apply your regular hair coloring product as usual.

What would cause someone's hair to not take dye?

Porous (dry) hair will not absorb colour because the cuticle (outer part of the hair strand) is too damaged therefore not allowing the colour to "stick".

She will need to do a good treatment to get some protein back into the hair and then get a hairdresser to use a "filler" on the hair first which basically just fills up all the holes in the hair with a base colour which then allows the real colour to stay on.