If you are using a permanent color, you will need to do your roots every 4-6 weeks depending on how fast your hair grows and your personal preference of how much 'natural growth' is showing. Same time frame (approx.) for semi/demi-permanent depending on how often you wash your hair, but it will fade all over.
For permanent color, your hair should be dry and 'dirty'. By that I mean wait a day or two after washing. Your scalp needs the oils to protect it because of the ammonia and/or peroxide. Try to brush/comb as much of the hair products out of it as possible.
With semi/demi-permanent I have had the best luck using it on clean, dry hair. I wash and condition it with color treated shampoo and conditioner, dry it, then apply the color.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum