Instant Effects Neck and Chest Firming Serum 30ml is specially formulated to revive, hydrate and firm skin. Vitamin C lightens age spots, green tea extract protects against environmental aggressions, and patented OX2 oxygen transfer technology aids in lifting and plumping. Skin is on average 59% firmer and 141% more hydrated in just 1 hour. Reduces fine lines and wrinkles by an average of 17% in just 4 weeks.