Which of the following is NOT a common type of barber service?

Nail care is not typically considered a common type of barber service. Barbers primarily focus on services related to hair and facial hair, such as haircuts, shaving, and hair coloring. These services are central to a barber's offerings, which cater mainly to men’s grooming needs, including specific hair styling and beard trimming.

In contrast, nail care usually falls under the domain of cosmetology, where technicians provide services like manicures and pedicures. While some barbershops may offer a wider range of grooming services that could include nail care, it is not a standard or traditional service provided exclusively by barbers, making it distinct from the other options listed.