This item has been Discontinued but we still have a few! Tac is for use with airbrush tattoo stencils. Holds stencil to skin to prevent running of paint onto skin outside of stencil. Directions: Shake well before using! Spray light coat onto stencil. Let formula dry completely for 30-45 seconds. For a stronger tack, spray a second coat and allow to dry.Do not spray on bare skin!