Vitamin c is a powerful anti-oxidant that stimulates cell renewal and the production of both collagen and elastin. Vitamin c also boosts the skin s natural immune properties, minimizing, and repairing the damage caused by free radicals. vitamin c: *brightens skin, *firms and tones the skin, *fights and repairs sun damage place 2-3 drops in palm of hand and apply with fingertips, into area to be treated. can apply morning and night after cleansing or shaving. place 2-3 drops in palm of hand and apply with.