This almost feels like too simple a product to get excited about, but I really liked
Studio London Superboost High-Shine Lip Oil (£5). As someone who has at least two lip balms in their bag at all times, I'm forever on the hunt for something that's going to leave my lips feeling smooth and comfortable. This is (as you'd expect by the name) satisfyingly greasy and gives lips a nice glossy sheen. There are two options, clear or green, although the green one I tried didn't have any discernible colour when applied to the lips. What I really appreciated was that it wasn't sugary sweet or highly flavoured – think shiny lips but for grown-ups.