Back of the box snippet which reads: Provides a deep refill of hyaluron and stimulates collagen production. the Miraskin Ultrasound ActiveBoost Wand delivers skin care ingredients more deeply into the skin. together with Mira-skin Hyaluronic Serum, it maximises moisture and leads to a deep refill of hyaluronic molecules inside your skin. furthermore, ultrasound stimulates cell metabolism and collagen production for radiant skin.