What is the average growth rate for the nail of a normal adult over a month's time?

The average growth rate for a normal adult's fingernails is typically about one-tenth of an inch per month. This measurement reflects the natural rate at which fingernails grow and is consistent with general anatomical studies of nail physiology. Understanding this average growth rate is important for barbers and those in the grooming industry, as it helps them guide clients regarding grooming intervals and nail care.

While other choices provide various growth figures, one-tenth of an inch is the established standard and aligns with biological data regarding nail growth. This knowledge allows professionals to make informed recommendations about nail trimming and care practices to maintain healthy nails.