When i bought mine, it had a cap, which of course I threw away, but if you want to travel, just wrap in a piece of foil. a small piece folded (think highlights) should do it.
answered 1 year, 1 month ago
This brush is really meant for your vanity, not day to day purse travel. I have no issues with the cap. If you are traveling I assume you are taking other brushes as well. The cap will stay in place just fine in a brush roll keeping any residual lip color from contaminating other brushes. For everyday purse carry get a retractable lip brush.
Basically, it comes with a cap, but the cap is not made well. It snaps on, but you have to put it on a certain way so as not to fray the brush and ruin it. I'd say, tape the top in place so that it doesn't twist around.