Gradual nail art is a design technique where the color of the nails transitions from one shade to another in a seamless and gradual manner. This style often creates a natural-looking effect and is popular for its versatility and ease of maintenance. It involves applying a base color, followed by a thin layer of a second color that is blended with the first to create the gradient. Techniques for achieving a gradient effect can vary, but typically include layering, sponging, or using special gradient brushes.