The interesting thing about lip serums is that they sit somewhere between skincare and makeup. They can make lips feel moisturised while also adding shine, tint or a smoother-looking finish. But not every serum serves the same purpose. Some are better suited to everyday wear, while exfoliating formulas should be used more selectively. The seven below cover different needs, so choosing a favourite becomes less about following a trend and more about understanding what your lips actually need. If your lipstick frequently leaves your lips feeling dry, this is where your routine may need a small but useful upgrade.