Preserving your chair vinyl is an important part of keeping your chairs and salon looking new, clean and fresh.  Chair vinyl, like any other vinyl, can be bent several different ways, folded and molded to what you're using it for.  While the vinyl takes to all of the folds and molds you need it for, it may also show some unintended creases and lines when something heavy is placed on, or in, it.  We had this happen in our showroom.  We stacked several product catalogs on the seat cushion of a styling chair as we were going through and reorganizing them.  After leaving them there overnight and restarting the project the next morning to clear them off the chair and back where they needed to go, we were left with creases and indents in the seat cushion from the stack of catalogs.  Bummer.  Fortunately, there are ways to get it out.  One is you can use a blow dryer to warm the vinyl, which helps stretch the vinyl and soften it.  You don't want to touch the end of the blow dryer to the vinyl, but just hover over the vinyl and get it warm-to-hot enough to still touch.  You may not get it out the first time, but you can repeat the process a couple times a day or once a day as you see fit.  Two is the normal usage of it.  When clients sit in the chair, their body warmth and heat over the time of the service being done will help stretch and shape the vinyl.  Another way is, if the chair is easily movable and not being used, you can move it outside on a warm, sunny day and the warmth of the sun can naturally work on the creases and lines.  Again, any or all of these processes may need to be done multiple times, but the fact of the matter is that most, if not all, creases come out if given time and appropriate attention.  If all else fails, call one of our support reps here and we can begin the process of helping you replace cushions, which will be more economical for you than buying a whole new chair.