Shaving at a 90 degree angle?

[raccoonandbrush]

When I shave the bottom part of my sideburns with my disposable blade straight razor, I shave at a 90 degree angle to make a clean line. The blade is made of stainless steel. My question is that i'm going to be getting a traditional carbon steel straight razor and I wanted to know if I do the same thing with a carbon steel blade, will that mess up the blade and make it dull?

Thanks!

 

[bluefoxicy]

Yes. Use a shallower angle.

 

[raccoonandbrush]

How would I be able to do that though? Wouldn't the hair stop the blade from cutting where you want?

 

[raccoonandbrush]

I just held up my razor to my sideburns with a shallower angle and I think I will be able to do it fine.