Method of promoting skin care products

1. A method of assessing the efficacy of a skin care product, said method comprising:

(i) taking a first standard photograph of the skin of a person prior to use of said skin care product by said person;

(ii) taking at least one first additional photograph of the skin of said person prior to use of said skin care product by said person, said first additional photograph selected from the group consisting of an ultraviolet photograph, a blue fluorescence photograph, and a polarized photograph;

(iii) taking a second standard photograph of the skin of a person after use of said skin care product by said person;

(iv) taking at least one second additional photograph of the skin of said person after use of said skin care product by said person, said second additional photograph selected from the group consisting of an ultraviolet photograph, a blue fluorescence photograph, and a polarized photograph; and

(v) comparing said first standard photograph and said at least one first additional photograph to said second standard photograph and said at least one second additional photograph to determine the efficacy of said skin care product.

2. A method of claim 1 , wherein said method comprises taking a polarized photograph.

3. A method of claim 1 , wherein said method comprises taking an ultraviolet photograph.

4. A method of claim 2 , wherein said method comprises taking an ultraviolet photograph.

5. A method of claim 2 , wherein said polarized photograph is taken with a camera by (i) filtering light emitted from a light source with a polarizing filter and (ii) not filtering the light entering said camera with an additional polarizing filter prior to such light entering said camera.

6. A method of claim 3 , wherein said ultraviolet photograph is taken by filtering light emitted from a light source with an ultraviolet A filter.

7. A method of claim 4 , wherein said ultraviolet photograph is taken by filtering light emitted from a light source with an ultraviolet A filter.

8. A method of assessing the efficacy of a skin care product, said method comprising:

(i) prior to use of said skin care product by said person, illuminating said person's skin with at least one first light source, where the light emitted from said first light source is filtered using a first polarizing filter, and capturing a first image of such illuminated skin with a first camera, wherein the angle formed by said light source, said skin, and said camera is from about 35 degrees to about 55 degrees;

(ii) after use of said skin care product by said person, illuminating said skin with at least one second light source, where the light emitted from the second light source is filtered using a polarizing filter, and capturing a second image of such illuminated skin with a second camera, wherein the angle formed by said light source, said skin, and said second camera is from about 35 degrees to about 55 degrees; and

(iii) comparing said first image with said second image to determine the efficacy of said skin care product.

9. A method of claim 8 , wherein the light entering said first camera and said second camera is not filtered with an polarizing filter prior to the light entering said camera.

10. A method of claim 9 , wherein said polarizing filter and said second polarizing filter are linear polarizing filter.

11. A method of claim 10 , wherein said first linear polarizing filter is arranged such that the electric field of the emitted light is about perpendicular to the plane formed by said light source, said person's skin, and said first camera and said second linear polarizing filter is arranged such that the electric field of the emitted light is about perpendicular to the plane formed by said second light source, said person's skin, and said second camera.

12. A method of claim 10 , wherein said first linear polarizing filter is arranged such that the electric field of the emitted light is about vertical and the plane formed by said first light source, said person's skin, and said first camera is about horizontal and said second linear polarizing filter is arranged such that the electric field of the emitted light is about vertical and the plane formed by said second light source, said person's skin, and said second camera is about horizontal.

13. A method of claim 8 , wherein said angle formed by said first light source, said skin, and said first camera is about 45 degrees and said angle formed by said second light source, said skin, and said second camera is about 45 degrees.

14. A method of claim 8 , wherein said first camera and said second camera are the same camera, said first light source and said second light source are the same light source, and said first polarizing filter and said second polarizing filter are the same polarizing filter.

15. A method of assessing the efficacy of a skin care product, said method comprising:

(i) prior to use of said skin care product by a person, illuminating said person's skin with at least one first light source, wherein said first light source either emits substantially only light having a wavelength from about 380 to about 430 nm or emits light through a first filter that emits substantially only light having a wavelength from about 380 to about 430 nm and capturing a first image of said illuminated skin with a first camera, wherein the light entering said first camera is also filtered with a first long pass filter, wherein said first long pass filter substantially eliminates light having a wavelength below about 430 nm;

(ii) after use of said skin care product by said person, illuminating said skin with at least one second light source, wherein said second light source either emits substantially only light having a wavelength from about 380 to about 430 nm or emits light through a second filter that emits substantially only light having a wavelength from about 380 to about 430 nm and capturing a second image of said illuminated skin with a second camera, wherein the light entering said second camera is also filtered with a second long pass filter, wherein said second long pass filter substantially eliminates light having a wavelength below about 430 nm; and

(iii) comparing said first image with said second image to determine the efficacy of said skin care product.

16. A method of claim 15 , wherein said first light source emits light through a first filter that emits substantially only light having a wavelength from about 380 to about 430 nm and said second light source emits light through a second filter that emits substantially only light having a wavelength from about 380 to about 430 nm.

17. A method of claim 15 , wherein said first long pass filter filters such light prior to entering the lens of said first camera and said second long pass filter filters such light prior to entering the lens of said second camera.

18. A method of claim 15 , wherein said first long pass filter and said second long pass filter substantially eliminates light having a wavelength below about 440 nm.

19. A method of claim 16 , wherein said first long pass filter and said second long pass filter substantially eliminates light having a wavelength below about 440 nm.

20. A method of claim 15 , wherein said first camera and said second camera are a digital camera and said person is presented with an image showing only the green channel of the RGB image captured by said digital camera.

21. A method of claim 19 , wherein said first camera and said second camera are a digital camera and said person is presented with an image showing only the green channel of the RGB image captured by said digital camera.

22. A method of claim 15 , wherein said first camera and said second camera are the same camera, said first light source and said second light source are the same light source, said first filter and said second filter are the same filter, and said first long pass filter and said second long pass filter are the same long pass filter.

23. A method of assessing the efficacy of a skin care product, said method comprising:

(i) taking a first standard photograph of the skin of a person prior to use of said skin care product by said person;

(ii) taking at least one first additional photograph of the skin of said person prior to use of said skin care product by said person, said first additional photograph being a polarized photograph;

(iii) taking a second standard photograph of the skin of a person after use of said skin care product by said person;

(iv) taking at least one second additional photograph of the skin of said person after use of said skin care product by said person, said second additional photograph being a polarized photograph; and

(v) comparing said first standard photograph and said at least one first additional photograph to said second standard photograph and said at least one second additional photograph to determine the efficacy of said skin care product;

wherein said polarized photograph is taken with a camera by (i) filtering light emitted from a light source with a polarizing filter and (ii) not filtering the light entering said camera with an additional polarizing filter prior to such light entering said camera.

24. A method of assessing the efficacy of a skin care product, said method comprising:

(i) prior to use of said skin care product by a person, illuminating said person's skin with at least one first light source, where the light emitted from said first light source is filtered using a first polarizing filter, and capturing a first image of such illuminated skin with a first camera, wherein the angle formed by said light source, said skin, and said camera is from about 35 degrees to about 55 degrees;

(ii) after use of said skin care product by said person, illuminating said skin with at least one second light source, where the light emitted from the second light source is filtered using a second polarizing filter, and capturing a second image of such illuminated skin with a second camera, wherein the angle formed by said light source, said skin, and said second camera is from about 35 degrees to about 55 degrees; and

(iii) comparing said first image with said second image to determine the efficacy of said skin care product;

wherein the light entering said first camera and said second camera is not filtered with an additional polarizing filter prior to the light entering said cameras.

25. A method of claim 24 , wherein said first polarizing filter and said polarizing filter are linear polarizing filters.

26. A method of claim 25 , wherein said first linear polarizing filter is arranged such that the electric field of the emitted light is about perpendicular to the plane formed by said first light source, said person's skin, and said first camera and said second linear polarizing filter is arranged such that the electric field of the emitted light is about perpendicular to the plane formed by said second light source, said person's skin, and said second camera.

27. A method of claim 25 , wherein said first linear polarizing filter is arranged such that the electric field of the emitted light is about vertical and the plane formed by said first light source, said person's skin, and said first camera is about horizontal and said second linear polarizing filter is arranged such that the electric field of the emitted light is about vertical and the plane formed by said second light source, said person's skin, and said second camera is about horizontal.