"I just bought a Care By Design vape pen and a cartridge with 55% THC and 7% CBD. The lady at the dispensary showed me how to get three colors (green, blue, red), but I don’t know how to turn it off, and I don’t know if I’m supposed to charge it immediately or not."
There should be some charge in the battery for use initially, though most devices are recommended to be charged fully before first use. I believe you will turn the pen fully off by clicking the pen 5 times quickly in succession.
ryan