By Lauren Haughey A clogged-up bathroom sink is an utter nightmare to clean out. But oneTikToker may have the solution to save us all, which makes use of ingredients you may already have in the kitchen cupboard. Taking to TikTok, a woman who posts under the username @BossiBunz explained that her homemade mixture works miracles when it comes to hair blocking your drain, melting it in just a matter of minutes. “A hair clog is the most common clog so here’s how to unclog a hair clog,” she told her followers. “If this doesn’t work, stop letting it get so bad to the point you need to call a plumber…