Julia Youssef, Assistant Vice President, L'Oréal Technical Center answers your frequently asked questions about hair color:
Covering All-Over Gray
My hair is more than half gray. I tried a semi-permanent color but my gray hair doesn't seem to hold it. What can I do to get the gray out?
You can get away with using non-permanent color when you are 25 percent gray. But when your hair is more than half gray, you need to use a hair color product formulated to cover gray hair. Gray hair
Covering Partially Gray Hair
I'm only 10 to 20 percent gray, and it makes my hair dull. Is there any way to cover the gray and not cover my whole head with color?
No. However, you can chase away your first grays without radically transforming your natural color by using a gentle non-permanent hair color product. By coloring your entire head of hair, it'll look less dull and more even. You may want to try L'Oréal ColorSpa MoistureActif.