Edgers increase razor bumps. LEt me give you some advice:
Razors: I rarely knick myself. Shaving my head I go with the grave first...then slowly against the grain.
Now after I shave my head I mostoirize(sp) it with regular lotion.
Don't use aftershave because you are burning your head and creating irritation.
Now I use the same razors above for my face but I after I shave my face I use rubbing alcohol. Again that aftershave stuff has perfumes which increase the fungus that causes razorbumps. After the alcohol cools down I shower. Don't scrub your face because shaving removes a layer of skin giving you a facial.
After the shower I use this:
Rugby Acne Cream 10....the stuff they sell in stores aren't worth a shit. Go to amazon.com and I usually pay around $8 which includes shipping.
Now this will dry your face out but the key is not to moisterize(sp) becuase you want the pimples and hairbumps to dry out. If you don't like the drying out during the day, take a shower at night and use it. I swear by this stuff!!!
Now on your face shave with the grain.