Use Pinkfishes Mapping String to help map out the desired shape of eyebrows ready for tint or hybrid stain application! Pinkfishes Mapping String helps to create a guide and ensures symmetry of the brows. How to use: Using the built-in cutter on the lid, cut off the desired amount of string. Use the thread to temporarily mark the brow area and "map out" the desired shape. Once finished, simply wipe the string markings away with a slightly damp cotton pad. Pinkfishes Professional lash & brow tints and developer are strictly only for sale to trained professional therapist, or those training in the profession.