BRÜUN AC - Control Clear and Pure Vita Plus Ampoule - Refreshing and Vitalizing Skin Care Serum 1.18 fl.ozUsage: Our 1. 18 oz serum ampule is enough for multiple usage. After using the ampule keep the collector inserted in bottle. You can use this booster serum with micro needling derma roller and pen. Absorption: When it is used with derma roller it absorbs deep in your skin and give you brightening and soothing effect. You will feel comfortable and relaxed after applying our ampule on your face skin. Economical product: Do not waste money on expensive