A lot of moisturizers will hydrate your skin adequately enough, but it's far less common to find one that also makes it feel utterly amazing. That's why you'll love Algenist Firming & Lifting cream ($94), which makes skin unbelievably, baby's-bottom soft from the first time you use it. The alguronic acid inside is designed to increase cell turnover by a rather impressive 55 percent, and although you probably won't feel your cells shedding faster per se, skin is left more luminous, with a reduction in fine lines. It's quite a substantial cream, however, so it's not optimal for very young or oily skin types. But if you need lots of hydration and some gentle exfoliation, it's a really exceptional product.