This serum is packaged rather like Chapstick, which makes it great for targeted application. The kojic acid in the formula is perfect for dark spots and while it may cost a pretty penny, a little goes a long way.
Here's another multi-use formula that combines serum and moisturizer into one step. It's got lots of skin-loving botanical extracts, such as soothing camellia oil and antioxidant-rich jeju blossom extract, as well as moisturizing ingredients, like sodium hyaluronate and ceramides. On top of that all, it's in twist-up stick form, so it really doesn't get much more convenient.
Like the rest of the Tula line, this pressed serum incorporates complexion-boosting probiotics (in this case from Kefir). The balm-like texture melts into your skin and the oils included in the formula help keep your skin dewy and moisturized.
Since this serum actually comes in bar form, you can use it to massage your face. It's quite rich and moisturizing, and thanks to the calamine and zinc in the formula, it's great for calming redness as well.
This is technically a solid toner as opposed to serum, but it still works much in the same way as the other products on this list: You just swipe it straight on after cleansing and it adds in some extra skin-conditioning moisture (along with a pleasant cooling effect).