Jade rollers aren’t a new beauty toolโ€”in fact, they date back to seventh-century Chinaโ€”but they’re certainly trendier than ever if our Instagram feeds are any indication.

In the past few years, they’ve slowly transformed from a somewhat obscure skin-care device to a mainstream must-have for beauty junkies.

So are the claims legitโ€”and should you go buy one ASAP?ย Here’s everything you need to know.