While undercuts are really versatile and stylish, they have some downsides. If you're someone who worries about your hair's volume, undercuts might not be for you because they can drastically reduce it. You can absolutely still try out this hairstyle, but be careful about how much hair you're cutting off. Try shaving only one side or the back of your head to avoid excess hair chopping (via Odyssey).
Another aspect you must consider before committing to an undercut is that the style requires a lot of maintenance. Think about how quickly your hair grows — this varies from person to person, and some people do everything they can to make their hair grow quicker — but this can make your undercut design look messy after about two weeks. So, it's recommended to do touch-ups twice a month, per Douglas J Salon. If you go for a standard undercut with no intricate design, it might be a good investment to get an electric razor and shave it yourself (proceed with caution).
Of course, haircuts are a form of self-expression, so go for whatever style makes you feel like your best self.