EXTREME firming serum 30 ml EXTRÊME firming serum 30 ml is a powerful anti-aging serum that helps reduce wrinkles, sagging skin, and other signs of aging. It is formulated with peptides, antioxidants, and other active ingredients to help improve skin elasticity and firmness. It also helps reduce the appearance of fine lines and wrinkles, while providing moisture and hydration. This serum can be used day and night to help give your skin the lift it needs.