Hi there, you need to shake vigorously for a few minutes before using. Also, a hot water bath for 15-20 mins will sometimes loosen up the material to add pressure and help unblock anything that may be in the tube. Sometimes through shipping or storage, the product can be frozen, or get too hot, and that may affect pressure in the cans as well. We want you to continue to texture in the future and do it with ease, so please give us a call at 1-800-729-9029 between 8am-5pm ET so we can further discuss and help you.