After cleansing and toning, apply the Vitamin C Serum over the entire face, neck and chest area. Allow the Vitamin C Serum to penetrate and follow up the application with the appropriate DermaFix skin moisturiser. For fine lines and wrinkles, best results are achieved when the Vitamin C Serum used both day and night. Hyperpigmentation post treatment: Apply every 3 – 4 hours.