This is almost magic…no pain, no bruising. TEOSYAL®PEN is technology that allows for more gentle injections of hyaluronic acid (Teosyal® PureSense Redensity I or Teosyal® PureSense Redensity II). The TEOSYAL®PEN delivers electronically controlled amounts of filler into the skin at a slow and regular rate. Used for fine lines anywhere on the face – crow’s feet, smile lines and neck texture. This method makes the skin look hydrated. The pen is a powerful addition to our dermal filler line.