I am a Mach 3 "disposable" shaver user for over 10 years....I'm just tired of buying cartridges.....so I shave my head and my facial hair with this...so my question is...is there anyone else who has shaved their heads with a straight razor? I know that it will be something I will have to wait to do until I master the facial hair first....but any tips or guidance towards that goal?! I usually shave in the shower as well - is this ok to do with a straight razor? This site is a plethora of information!!