Gray to maroon gradient nail art picture 2015 style

Quick answer：

The subject refers to a nail art design featuring a gradient from gray to maroon, which was popular in 2015. Nail art styles often evolve with trends, and gradients have been a common technique in nail design. This particular style combines two contrasting colors to create a visually striking effect. It is typically applied using a base coat, followed by a gradual blending of the two shades of polish.