I've tried all the different time frames between shaves: daily, every other day, every few days, etc. I've settled on every 2-3 days, though sometimes I'll shave two days in a row. I've found that when you shave on consecutive days, that 2nd day will almost never be as smooth as the first. The reason being is that to attain that absolutely smooth ATG shave on the 2nd day you have to press harder (if using cart razor) or do more passes (using a DE or similar) because your hair is closer to the skin or even under the skin, and this inevitably leads to irritation. The sly guys have given you great advice on how to treat razor burn post-shave, but I honestly believe if you're getting any type of razor burn you're doing it wrong. That's why I've settled on shaving every 2-3 days; I can get the absolute best BBS shave possible with zero irritation. I also believe it is possible to get a BBS dome shaving daily, it just requires more work and you're pretty much guaranteed at least some irritation in my experience.