Gray Hair

> My mom has hard to color gray. Can anyone recommend> haircoloring products that provide complete coverage.> Are there products such as shampoos, conditioners> etc...that address the needs of gray hair?> Thanks for the help!!Is there a "permanent" type of color she has already tried but did not get good enough grey coverage? You can take most any "permanent" hair color (not in ash tones but preferrably in neutral) then pour just a little of the developer out before mixing. This will increase the ammonia level and give it that extra zap that resistant grey needs for good coverage. Rubbing the color into the hairshaft with a brush instread of just squeezing on from a bottle helps too. Make sure you process the full suggested process time.