Package or product having a use indicator

1. A product that includes:

a bottle; and

a use indicator carried on at least one inside surface of the bottle so that, upon removal of a closure from the bottle or upon removal of flowable product from within the bottle, a coloration of the product changes irreversibly to indicate to a user that the product has been used, wherein the indicator includes,

an air-reactive material on the at least one inside surface of the bottle, and

a protective material for the air-reactive material that is dissolved by the flowable product upon filling the bottle with the flowable product.

2. A product that includes:

a bottle; and

a use indicator carried on at least one inside surface of the bottle so that, upon removal of a closure from the bottle or upon removal of flowable product from within the bottle, a coloration of the product changes irreversibly to indicate to a user that the product has been used, wherein the indicator includes an air-reactive material on the at least one inside surface of the bottle, wherein the air-reactive material includes an air-reactive base material composed of at least one of copper, iron, potassium, sodium, PEN (polyethylene naphthalate), or polycarbonate, and the indicator also includes a protective material over the base material and composed of at least one of polyacrylic acid, polyacrylamide, xanthan gum, pectin, chitosan derivatives, dextran, carrageenan, guar gum, and/or cellulose ethers, for instance, hydroxypropylmethyl cellulose (HPMC), hydroxypropyl cellulose (HPC), hydroxyethyl cellulose (HEC), or sodium carboxy methyl cellulose (Na-CMC).

3. A package including the product set forth in claim 1 , a closure coupled to the bottle, and a flowable product carried in the bottle.

4. The package set forth in claim 3 wherein the air-reactive material, upon contact with air, irreversibly changes the coloration to indicate to a user that at least one of the closure or the flowable product has been removed from the bottle.

5. A package including

a product that includes:

a bottle;

a closure coupled to the bottle;

a flowable product carried in the bottle; and

a use indicator carried on at least one inside surface of the bottle so that upon removal of a closure from the bottle or upon removal of flowable product from within the bottle, a coloration of the product changes irreversibly to indicate to a user that the product has been used, wherein the indicator includes a protective material for the air-reactive material that is dissolved by the flowable product upon filling the bottle with the flowable product.

6. A method of producing a product that includes the steps of:

(a) positioning an indicator inside of a container, wherein the indicator includes a protective material and has a coloration state changeable to another coloration state in response to use of the product;

(b) flowing a flowable product into the container to at least partially cover the indicator and including dissolving the protective material with the flowable product; and

(c) assembling a closure to the container.

7. The method set forth in claim 6 wherein the assembling step (c) is conducted under at least one of a vacuum condition or an oxygen-free environment.

8. A product produced by the method set forth in claim 6 .

9. A method of using the product set forth in claim 8 that includes:

removing the closure to open the container; and

dispensing the flowable product out of the container and over the indicator, such that the indicator is exposed to air and exhibits a different state of coloration that is irreversible to the initial state of coloration.

10. A method of discouraging reuse of a container after opening of the container, which includes the step of: applying a permanent discoloration to the container, which is observable by a potential user to indicate that the container has already been used, wherein said step of applying a permanent discoloration to the container is carried out by

placing air-reactive materials on an interior surface of the container and applying a protective material that is dissolvable by flowable product upon filling the bottle with the flowable product such that, when the container is opened and/or contents of the container are removed, the air-reactive materials are exposed to air, thereby causing a detectable spectral shift.

11. The product set forth in claim 1 , wherein the air-reactive material includes an air-reactive base material composed of at least one of copper, iron, potassium, sodium, PEN (polyethylene naphthalate), or polycarbonate, and the protective material is disposed over the base material and is composed of at least one of polyacrylic acid, polyacrylamide, xanthan gum, pectin, chitosan derivatives, dextran, carrageenan, guar gum, and/or cellulose ethers, for instance, hydroxypropylmethyl cellulose (HPMC), hydroxypropyl cellulose (HPC), hydroxyethyl cellulose (HEC), or sodium carboxy methyl cellulose (Na-CMC).

12. The package set forth in claim 5 , wherein the air-reactive material includes an air-reactive base material composed of at least one of copper, iron, potassium, sodium, PEN (polyethylene naphthalate), or polycarbonate, and the protective material is disposed over the base material and is composed of at least one of polyacrylic acid, polyacrylamide, xanthan gum, pectin, chitosan derivatives, dextran, carrageenan, guar gum, and/or cellulose ethers, for instance, hydroxypropylmethyl cellulose (HPMC), hydroxypropyl cellulose (HPC), hydroxyethyl cellulose (HEC), or sodium carboxy methyl cellulose (Na-CMC).