I get my hair professionally colored every 6 weeks. I am 44 and have been graying since about 20. My hairstylist estimates me to be about 80% gray. My mom has gorgeous white hair. When I turn 60, I will stop coloring, but for now, I'll be vain! Plus, my husband said he would rather I keep coloring it than let it revert to my natural gray. Since he's paying, I will keep coloring for now.