How to Use for Effective Results Clean your face with a gentle face wash. After cleaning, pat dry the skin with swift hand movements. Now use a toner, or a serum, whichever your skin needs. (opti - download at 4shared. How to Use for Effective Results Clean your face with a gentle face wash. After cleaning, pat dry the skin with swift hand movements. Now use a toner, or a serum, whichever your skin needs. (opti is hosted at free file sharing service 4shared.