The Perricone MD Cold Plasma Sub-D Neck Firming Treatment is a jumbo-sized 4oz moisturizer specifically formulated for lifting and firming the neck area. With active ingredients like Glycolic Acid, this treatment is designed for all skin types and comes from the trusted brand Perricone MD. This unisex product has a formulation of Plasma and has a Period After Opening (PAO) of 12 months, making it a reliable option for achieving a more defined and sculpted neck.