The basics Nick Dudman Washable Blood by Pigs Might Fly Ltd is an ultra-realistic, fully washable, non-toxic, non-staining running blood, developed by multi-award winning special effects make-up artist, Nick Dudman.  The benefits Washes off with soap & water. Won't stain skin and washes out of most fabrics.  The uses Create ultra-realistic running blood effects Do not swallow or use on broken skin. The bottom line For professional use only! For a long shelf-life, store sealed in a cool location away from direct sunlight.