What does the term "overlap" refer to in nail enhancements?

The term "overlap" in nail enhancements specifically refers to when the enhancement product extends beyond the natural nail and onto the skin. This can occur during the application of products like gels, acrylics, or other types of enhancements, and is a critical issue because it can lead to lifting, discomfort, or even skin irritation. Proper application techniques should always ensure that the product adheres only to the natural nail without spilling over onto the surrounding skin, which helps to maintain a clean and professional appearance as well as the health of the nails and surrounding tissues.

The other options refer to different issues related to nail care but do not accurately define "overlap." For example, applying nail polish too thickly relates more to the finish and curing process of polish rather than the placement of enhancement materials in relation to the skin. Similarly, improper filing concerns the shape and smoothness of the nail rather than product application, and the mixing of base and top coats relates to the layering of products rather than the concept of overlap.