There's nothing we love more than the marriage of beauty and technology. When researching renewable energy, scientists stumbled upon alguronic acid, a compound that protects single-celled organisms in harsh conditions. It's a component in all Algenist products, and one that serves the neck especially well. Within 10 days of use, 100 percent of users reported a younger-looking neck, and 94 percent saw fewer wrinkles and fine lines. After four weeks, 87 percent reported a more taut, firm neck.

Need a lift? Reach for this little jar. This neck cream by Estee Lauder contains their light-activated Lift Complex, made of collagen-protecting plankton extract, radiance-boosting malachite and collagen-boosting mimosa extract. Plus, it's got SPF, which absorbs wrinkle-causing UVA and UVB rays.