Let's talk about hair color. Do you color your grays? This post has been sponsored by Zotos Professional, offering hair care products backed by science since 1929. I feel like each year, the number of grays I have increased exponentially! I've been coloring my hair for years...probably since my late 30s. I used to be able to get away with using the drug store versions every few months. But then I noticed my grays becoming more stubborn and the hair dye washing off much quicker than I wanted…