Privacy and presence on a walking high street
For salons, treatment rooms, clinics and consultation-based businesses we usually run a frosted or printed band across the lower two-thirds of the glazing with clear glass above. Clients inside are not on display to the pavement, but the unit still reads as open and lit rather than shuttered.
Food and drink units go the other way: keep the glass clear so a busy room does the selling, and concentrate graphics on the door, the upper glazing and a well-designed offer panel that can be changed without redoing the frontage.

