Vajazzle Single Double Hearts with Stems Crystal Tattoo for your body. Use anywhere. Package contains a single Double Hearts with Stems design, alcohol wipe to prepare the skin for application, full instructions. Vajazzling Crystals are flat on one side, and are self-adhesive. Completely safe, non-allergenic, and harmless to the skin. They will last for days and can be easily removed. Design Size: 2 inches wide by 1 1/4 inches high Crystal Color: Assorted Colors. Siam Number of Crystals: 30 Crystal Size: 3mm. Non-toxic, do it yourself. Waterproof.