/cgl/ - Cosplay & EGL

How long do felt tip liners usually take to dry out?
I have the Stila Stay All Day liner and when I just got it it was fucking magic, with the perfect dark brown almost-black-but-more-natural colour and it didn't budge even a bit until I'd use makeup remover 10+ hours later. Now I've had it a little under two months and the colour is a lot lighter than before and it's completely gone after a few hours. I don't think I've used it often enough for it to be empty. Is there something I can do to revitalize it or is this normal for felt liner pens?

Pic related it how it looks now on my paper-white skin (sorry for the shitty lighting), whereas it used to be almost black before.