Suitable at any time of the year, for all ages and for all skin types, this precious serum has been designed for all-round use. It is perfect on its own, but can also be used in combination with all Collistar creams. Apply the serum after warming it between the fingers and massage gently from the center of the face outwards, and from the base of the neck upwards. To promote the serum’s absorption, end by gently pressing the face and neck with both hands.