"Tracie Martyn co-founder and CEO Marius Morariu says that the celebrity-loved spa and brand’s hydrating and firming Neck and Body Serum “has an orchestra of ingredients that don’t just target the neck but also help to define the jawline and contour other areas.” At the top of this list is pumpkin seed extract, which the nutritionist-turned-skin-care-leader loves for its superfood qualities. “Pumpkin seeds are healthy to eat, but who knew they contain a protein that helps to slow down the breakdown of your collagen and therefore prevent your neck from becoming a challenge to your confidence?” Morariu says. “Basically studies suggest that this ingredient can inhibit collagenases and therefore preserve the elasticity you have or as much as possible of it.”"