Your gruesome special effects just got even more gross with a sinister glow! Use UV reactive fake blood to add deep red bloodstains to special effects wounds and dripping effects for the best Halloween and party looks. With a narrow, easy to apply tip, this UV reactive fake blood it all you need for added gore and better still is fluoresces under UV blacklight to give you an eerie glow! UV reactive fake bloodFluoresces under UV blacklight 10ml tubeEasy to apply narrow nib