Hydrating neck cream tightens, firms and returns youthful neck and jawline contour. Protein tighteners and StriVectin patented NIA-114™ take your neck to new heights. Only StriVectin has NIA-114™, StriVectin's proprietary form of vitamin B3 (Niacin) discovered during skin cancer research and backed by clinical trials, to help renew skin strength. Skin’s ability to fight sagging, hold natural collagen and moisture improves. So you see more lift.