By THÉRÈSE MARGOLIS During the last few months, we have all become experts in home manicures, in-house hair care and do-it-yourself facials. Indeed, the covid-19 lockdown has tweaked our talents in personal hygiene, makeup applications and (almost) salon-perfect hairstyling. But just because now you are no longer confined to the four walls of your 40-square-meter apartment, doesn’t mean you should