What purpose does shaving cream serve and how long can you use a disposable razor?

I have started to grow a bit of facial hair and it really hurts to play trombone.What purpose does shaving cream serve and how long can you use a disposable razor?
shaving cream lubricates the hair so it will cut instead of pull out. a disposable razor depends if your face has peach fuzz or stiffer hair,i can only use one twice.What purpose does shaving cream serve and how long can you use a disposable razor?
Shaving cream is mostly a lubricant and soothing agent. You should stop using a disposable razor when it starts to';pull'; your beard rather than cut.
Shaving creams or gels act as a lubricant to help the blade slide across the skin without causing barbers itch, which is an irritation caused by the outer layer of epidermis being taken by the blade.. it can be quite uncomfortable.. the length of time you can use a disposable razor depends mostly on the toughness of your beard... if it starts to pull or cause any type of discomfort use a new one..
it helps lubricate the skin and the razor. Some brands of shaving cream help break down the hair so that it come off easier. You can keep using the razor until it get dull or just needs a new blade. you will be able to tell. Good luck with shaving!!
shaving cream lubricates the hair so it will cut instead of pull out.