Hillary Clinton says her hair and makeup routine is “a daily challenge.” The Democratic presidential frontrunner and former secretary of State participated in a Facebook Q&A on Monday, answering a handful of wide-ranging questions from users. “Every morning, as my boyfriend zips out the door and I spent 30+ minutes getting ready, I wonder about how the ‘hair and makeup’ tax affects other women,” one Facebook user, Libby Britain, said in a message to Clinton. Britain added, “as a young professional woman, I’d genuinely love to hear about how you manage getting ready each morning.” Clinton replied, “Amen sister —...