Yes and no. I was really surprised myself to have a wick work for a week with no issues besides rinsing off occasionally. If you cover at least one airhole (inside or outside I'm assuming), the suction is sucking juice into the wick and keeps it wet enough to protect it.
I have noticed that 4.2v with a 1.8 head can burn the cotton a little if I'm not careful, but 3.7v w/ a 1.8=Heaven. Rinse it off in a few days and it's pure white.
Hmm did you just buy cotton wicks premade somewhere or do you like rip up old tshirts??? noob question i know but be gentle


Hmm... Learn something new every day. Although, I'm a bit hesitant to try this myself...