stained

Is this normal? It is authentic, and it's only had the serpent mini on top.... With only commercial juice through it. (None diy juices) And it's literally like 2 months old.

Hi guys, I have been looking around a few places, and I can't seem to find the dropper bottles I'm looking for. BlckVapour has both Clear and Amber, and that's awesome, but the last batch I ordered had a few of the pipettes that seemed a little too short for the 30ml's as well as the pipettes...