From what I have read in the past, blondes ( natural ones) have more hair, and they also lose more hair on a daily basis 50-100 strands a day. Blondes have some 150,000 hairs. Brunettes have about...
Sure you can, you just need to rest to hair for a few days before you have it dyed. visit http://www.hair-color-ideas.net/right-hair-color-for-you for more info.