Yon-Ka s remarkable face firming serum is part of a two-step ritual that firms, lifts and tightens the skin. This anti-aging serum is powered by an advanced complex of redensifying and regenerating hibiscus peptides, soy peptides and marine collagen for a strengthening effect that helps defend against the progression of skin aging. Composed of 89% ingredients of natural origin, this light, silky gel serum is infused with vitamin C-enriched rosehip extract to nourish and protect skin. Perfectly complements our Advanced Optimizer Creme for the ideal anti-aging routine that firms skin around the clock.