Often shaving commercials brag about how their razor has more blades than their competitors, are more blades somehow better, and if so why?
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On a multi blade razor each razor has a job. The first blade hooks on to the hair follicle and pulls it up (it cuts it as well), the second blade then cuts that more exposed hair, and the third blade makes sure nothing is missed. Further blades serve as further backup. This allows you to shave faster, and do less passes. You also need less pressure, and the blades are angled in a specific way, which results in a lower chance of cutting yourself. It make shaving easier. However there are downsides to a multi blade razor. They give you a higher chance of razor burn, skin irritation, nicks, and ingrown hairs (since they cut the hair beneath the skin).
A single blade razor, either a straight razor or a safety razor, is going to give you a “cleaner” shave, there is a way lower chance of razor burn, skin irritation, nicks, and ingrown hairs. The downside is that you are more likely to cut yourself, and can do so quite badly. Shaving with a single blade razor requires much more care and practice than shaving with a multi blade razor.
At the end of the day it’s really about your preference. That said a multi blade razor makes shaving quicker and easier, while a single blade razor will give you a better shave if you’re willing to put in the time.
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