The characters combine beautifully: a customer (`客`) who turns their head back (`回头`) to come again. It's a very visual and intuitive term.
In Western business, “customer loyalty” is often measured with data, points cards, and marketing analytics. While these exist in China, the concept of `回头客` is rooted in a more personal, relational culture.
The term `回头客` is extremely common in daily life and business.