For maintaining the firmness of the chest. I used it once a year together with the corresponding tightening gel, alternating morning and evening. Previously, I would take a cold shower on my chest to activate blood circulation, using a special device from Clarins that I brought from France, which I have never seen in Greece. Alternatively, someone can use the showerhead's spiral and make circular movements, pouring cold water around the chest and neck. Intensive use is necessary, at least once a year.