Jason Chun is a CNET writer covering a range of topics in tech, home, wellness, finance and streaming services. He is passionate about language and technology, and has been an avid writer/reader of ...

Gua shas (pronounced "gwah sha"): I bet they’ve been all over your TikTok and IG feeds, with influencers and celebs claiming they'll miraculously "contour the face" and "smooth wrinkles." Apart from ...