To get better gray coverage when coloring my hair, should I use 20V developer, rather than 10V?

I've been a dark auburn color for years, but it seems that the grey is starting to show WAY too soon after I color. I've been using 10V developer for some time, but I'm curious if I need to bump up to 20V.....help!

To get better gray coverage when coloring my hair, should I use 20V developer, rather than 10V?

mix them.

To get better gray coverage when coloring my hair, should I use 20V developer, rather than 10V?

no you need a 30 for gray hair 10 is way to low for your coverage and 20 is more for not being to drastic to your hair so if you are trying to cover your gray go for 30 youll see that its best

To get better gray coverage when coloring my hair, should I use 20V developer, rather than 10V?

I use 20v., and get great grey coverage with Miss Clairol. My greys don't show 'til they grow out (way too fast, LOL).Call or write the Clairol helpline through their website, they can advise you best.