There's a trendy new cure-all in town-you might have seen ads pop up on social media or read rave reviews in beauty magazines. Exosomes are being touted as a miraculous treatment for hair loss, aging skin, acne, eczema, pain conditions, long covid, and even neurological diseases like Parkinson's and Alzheimer's. That's, of course, if you...

This is today's edition ofThe Download,our weekday newsletter that provides a daily dose of what's going on in the world of technology. Exosomes are touted as a trendy cure-all. We don't know if they work. There's a trendy new cure-all in town-you might have seen ads pop up on social media or read rave reviews...