Few beauty products have inspired quite as many selfies as the highly-coveted GlamGlow Sonic the Hedgehog GravityMud masks, the shiny blue masks that have been taking over Instagram for weeks. Makeup ...

Few beauty products have inspired quite as many selfies as the highly-coveted GlamGlow Sonic the Hedgehog GravityMud masks, the shiny blue masks that have been taking over Instagram for weeks.