* Market Size: The nail salon industry is quite large. In the United States, it's a multi-billion dollar industry. This suggests a significant number of customers.
* Demographics: Nail services are popular across various age groups and demographics, although they tend to be more popular among women.
* Frequency: Some people go to nail salons very regularly (e.g., every 2-3 weeks), while others go less frequently (e.g., for special occasions).
Based on this, it's safe to say that millions of people visit nail salons regularly in the United States alone.