Review on VNDEFUL Reusable Portable Eyelashes Container by Kara Hans

Great for eyelash serum. This is the best way to hold the black stopper (wiper) on the first try: (1) place stopper on brush, (2) stopper should be as close to brush handle as possible, but still have finger between handle and cork, (3) put the eyelash serum into the tube (leave space for the brush), (4) insert the brush into the tube until the stopper touches the tube, (5) insert the stopper into the top of the tube. This way there is less air pressure to push the cork out and the cork stays inside.