This latest TikTok hack is pretty simple. It basically takes a go-to tool for fuller-looking lips and replaces it with something you probably already have in your makeup bag. Instead of lip liner, you'll be using highlighter.
Per Byrdie, if you know a thing or two about the best ways to apply your highlighter, you probably know that makeup aficionados often put a dab of highlighter above their upper lip. According to TikToker, @angelaluvspho, whose viral TikTok tutorial for highlighter lips has nearly 180K likes, the trick here is actually applying highlighter onto your upper lip rather than above it. This might seem counterintuitive to folks who are used to overlining their lips with a lip-colored liner. However, in this case, instead of trying to extend the outline of your lip, you're giving the illusion of more shape.
Once you apply a super shiny gloss over your lips, the highlighter will simply add to the places where your lips reflect light, making them look plumper and more pronounced.