HOW DO YOU DISPOSE OF ALL THOSE HALF-USED NAIL VARNISHES IN YOUR BATHROOM - AND WHAT HAPPENS TO THOSE MILLIONS OF SALON EMPTIES? WE FOUND OUT I contacted Terracycle, who are pros at recycling typically hard-to-recycle waste, but who stop short of taking nail varnish bottles themselves. "Nail polish bottles are particularly difficult to recycle," their PR spokesperson Sam Angel confirmed.