The problem with leaving it on the blade is that the excess that is not permanently on the steel would just rub off and then cause complications for the ice. It would make the ice have a harder time freezing wherever the residue is left. To avoid this we recommend wiping the excess off. Hey malcb33! SK-8T Fuel works by creating the permanent liquid barrier as you mentioned. What most people don't know is that when you glide on ice, your blade glides on a thin layer of water that is created from the melting of the ice due to friction. When you corner and turn this water is displaced due to compression. Water is not compressible, therefore it displaces and creates huge friction between the blade and the ice. SK-8T Fuel helps to reduce this friction during aggressive cornering and cutting. It is a very scientific product that is proven to work and is endorsed by Ryan Nugent Hopkins. He and many team trainers swear by the product and claim to feel signifiant improvement. Remember though, they are on their skates all day and notice even the slightest difference so for them it has dramatic impact. Hi notquitedeadyet, To answer your question, the SK-8T Fuel does not come off after warm ups. The way it stays on is by permeating the pours in the steel and adhering to it. Much like grease on a moving engine, even if it is wiped off, it remains slightly. Only with SK-8T Fuel it has been formulated to stick MUCH BETTER and it takes the average player at least 2-3 games before they would need to re apply it. If you are a heavier skater then 2 games is recommended. Hope this answers your question! SK-8T Fuel works by creating the permanent liquid barrier as you mentioned. What most people don't know is that when you glide on ice, your blade glides on a thin layer of water that is created from the melting of the ice due to friction. When you corner and turn this water is displaced due to compression. Water is not compressible, therefore it displaces and creates huge friction between the blade and the ice. SK-8T Fuel helps to reduce this friction during aggressive cornering and cutting. It is a very scientific product that is proven to work and is endorsed by Ryan Nugent Hopkins. He and many team trainers swear by the product and claim to feel signifiant improvement. Remember though, they are on their skates all day and notice even the slightest difference so for them it has dramatic impact.