BIODROGA Bioscience Institute - Hydra Boost Concentrate floods the skin with valuable moisture and helps the skin to store it. The unique texture with biotechnological ingredients effectively cushions the skin, allows it to gain elasticity and gives a youthful plump complexion with fresh radiance. To use: Apply the contents of an ampoule to the face, neck and décolleté in the morning and/or evening and work well into the skin. For external use only.