I left a 4 star review on this product previously but It was wrong of me to do so. The reason I left it as a 4 star and not a 5 star was because I thought that the design of the cap was require too waaay too much force to close , thus making it where I had scenarios of the cap not being closed all the way and leaving the liquid to dry preventing any more liquid chalk to come out the tube. At first, I had this happening often so i had to keep twisting the cap off and getting the liquid out without the cap.
BUT I found the PERFECT method on how to use it. It was literally just a user error on my part! The trick to closing the cap properly is to simply press down right on the CENTER of the cap (not the edge, the CENTER) and it'll require little to no effort and have satisfying "click" sound to it to ensure it's nice and tightly sealed. You could even close it using just one finger!
With that being said, the liquid chalk is GREAT, the product's design is GREAT and I'll definitely be buying more of this just as I've been ONLY using mag dust product for the past year. 5 Star !