Smog grey two-tone gradient nail design

Quick answer：

Smog grey two-tone gradient nail design refers to a nail art style that features a gradient of smog grey colors. This design is often considered modern and chic, and it can be achieved using different techniques such as painting, stamping, or applying nail polish with a sponge. The smog grey colors can range from lighter to darker shades, creating a subtle or bold effect depending on the preference of the wearer.