The regenerative-skincare ingredient has gone from dermatology research and post-procedure clinics to luxury vanities and TikTok beauty routines. Here’s why exosome serums are suddenly everywhere, what the science actually says, and which products are making the biggest promises. If your skincare routine has recently started sounding more like a biotechnology lab than a beauty counter, you are not alone.

First came peptides. Then PDRN and polynucleotides. Now, another decidedly scientific-sounding ingredient is having its breakout moment: exosomes.