What is indicated by a lack of translucency and absence of shine?

The term "opaque" refers to a lack of translucency, meaning that light cannot easily pass through the substance. In the context of haircolor, an opaque finish would mean that the color is solid and does not allow for any light transmission, resulting in a non-transparent appearance. This characteristic often implies that the color deposit is thick and does not reflect light, contributing to an absence of shine.

In haircoloring, achieving an opaque effect can be useful for certain styles, especially if the goal is to create a bold, uniform color without highlights or dimension. While matte finishes also suggest a lack of shine, the defining feature here is the opaqueness, which specifically relates to the way light interacts with the color. Therefore, the correct term to describe a lack of translucency and shine in this context is "opaque."