As with all things, prevention is better than a cure. When coloring your hair at home, avoid hairline and ear stains by applying a coconut oil or Vaseline layer to these areas. Doing so creates a barrier between your skin and the dye. Secondly, don't color freshly washed hair, as shampoo strips away your skin's natural oils, which naturally provide some protection against dye stains. Always use gloves and wear long-sleeved clothing to protect your hands and forearms from any rogue hair color – and if you see any stains forming, wipe them away quickly before they can set.