Which leads us to the #1 rule most experts agree upon: you should never cut your cuticles. If you recently got a manicure and went a little snip-happy with your cuticle skin, don’t freak out. But don’t do it again. The reason you shouldn’t cut your cuticles is that “not only can biting or cutting the cuticles introduce infection, but without the cuticle barrier to protect that surrounding skin and developing nail, an infection is more likely to develop.