A use-dependent indicator system for detecting the exhaustion of an active
chemical within an absorbent article is provided. The indicator system
includes at least one dye component and a polymer mixture. The dye
component(s) can be non-reactive and/or reactive dyes. The polymer mixture
can contain a polymer, such as a latex adhesive, to facilitate control
over the dissolution rate of the dye component(s). By controlling the
dissolution rate of the dye component(s), an indicator system of the
present invention can impart a change in color to signal the exhaustion of
an active chemical incorporated within the absorbent article, such as an
anti-microbial agent.
