Scroll through TikTok or Instagram and you will notice a new beauty obsession lighting up the feed: PRF under eyes. The videos all look familiar — a quick blood draw, the centrifuge spinning, and the caption “liquid gold.” Then come the reveals. Eyes that looked hollow and shadowed suddenly appear smoother, brighter, and rested.

The under-eye area is one of the most delicate parts of the face — and also one of the most commonly asked-about. Darkness, puffiness, fine lines, or a hollow look... it can be tough to treat, and even tougher to know what actually works.