You can print your own lipstick thanks to YSL — but is it worth $300?

When a product blows up on TikTok, you know the out-of-stock alerts are soon to follow. 

YSL's lipstick creator, the Rouge Sur Mesure, has quickly become the beauty tech product on everyone's lips, as TikTok users wax poetic about the seemingly simplistic contraption's ability to instantly elevate your makeup look. 

The...