The invention concerns a composition capable of indicating by color change when
consumer articles, particularly volatile material dispensers, containing or associated
with the composition have become inefficient in use. The composition includes:
a) a volatile liquid component, b) a non-volatile component of an oxide or hydroxide
of the metals of group III or IV of the periodic table and a polymer obtainable
by the reaction, in the presence of the volatile liquid component, of a functionalized
polymer with a cross-linking, and c) a dye capable of changing color as a function
of the medium in which it is incorporated. Optionally, the composition can also
contain an effective amount of an acidic compound. The invention also concerns
the consumer article containing the composition, in particular a device aimed to
diffuse a volatile or partially volatile liquid, more specifically an air freshener.