Clean Your Razor
After every shave, make sure to sanitize your blades with rubbing alcohol and warm or hot water. If your razor looks rusty and you’ve been using it for a while, toss it out. “Replace old blades—ones you’ve used for more than five to seven shaves,” says Engelman. This is to avoid the overgrowth of bacteria that’s been exposed to the blades while they sit idly in your shower. So cut your losses (and avoid those red bumps) by refreshing your stock of razor blades and storing them in a clean, dry place, like your medicine cabinet.