| abstract |
The present invention concerns novel methods and compositions useful for providing a temporary visual indication of the location, concentration, and/or time period of treatment of an applied material. The subject invention provides compositions and methods that use a temporary visual indicator. In certain embodiments, the temporary visual indicator is a pH sensitive visual agent (i.e., dye) that can be added either alone or in combination with other visual agents and/or pH modifying agents. In related embodiments, compositions of the invention comprise a combination of at least one pH modifying agent and at least one pH-sensitive visual agent. |