Grayer. Darker. Lighter. Straighter. Curlier. Losing luster. Gaining frizz. And growing longer, longer, longer… As we continue to shelter in place to help limit the spread of Coronavirus, Zoom video meetings are proof of one thing: our hair has seen better days.So we asked Michelle Parkes, celebrity hairstylist and owner of Core Salon of Randolph, NJ, for some guidance and tips to make o…