nope but i freqeuntly mix my own menthols with premix
juice.
best way to do it is to be equipped with a 510/306 atty with drip tip.
my menthol concentrates is 15-20drops per 30ml. yours may vary depending how u made ur menthol drops and also how concentrated ur menthol drops r.
after i add about 15-16 drops, i tilt the bottle front back up down all over (i dun shake my mix). then let it sit for 10-15mins while i go watch some shows. then come back n drip onto the atty and
vape. if its ok then tadah. if not i'll add another 1-2drops of menthol n repeat the process till i get what i want.