The Algenist GENIUS Sleeping Collagen ($98; sephora.com) is a luxurious new nighttime treatment that I’ve been using as part of my skincare routine the past few weeks and can’t say enough good things about. It's a super hydrating, brightening skincare addition that leaves my skin feeling super soft and dewy by morning. With dropping temperatures, my skin has become drier than ever and this one is fabulous for adding back moisture. Algenist recommends using this like a serum, underneath your skincare. Most of the time I use this by itself and sometimes do layer a moisturizer on top. The texture is that of a balm that melts like an oil and absorbs fairly quick. It does have a bit of a fragrance, similar to that found in many Algenist Genius products - sort of a light vanilla, but soothing and not overpowering at all. If you are in your 30s and have dry, lackluster skin, this is something I would definitely recommend as an addition to your nighttime skincare routine. Although a splurge, a little goes a really long way with this one and even after weeks of using it, I seem to have barely gone through anything at all.