Color changing cleansing composition
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Abstract
A cleansing composition is disclosed that changes color during use. The cleansing composition contains a plurality of thermochromic dyes that cause a color change to occur at a threshold temperature and continue to cause a color change over a temperature range. The range of temperatures corresponds to approximately the amount of time sufficient to properly wash or scrub using the product.
210 Citations
57 Claims
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1-31. -31. (canceled)
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32. A cleansing composition comprising:
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at least one surfactant;
a plurality of thermochromic dyes blended with the surfactant in an amount sufficient to add color to the cleansing composition, the thermochromic dyes being configured to change the color of the cleansing composition when the composition reaches a particular elevated temperature; and
a suspending agent for the thermochromic dyes. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A cleansing composition comprising:
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at least one surfactant; and
a plurality of thermochromic dyes blended with the surfactant, the thermochromic dyes being present in an amount sufficient to add color to the cleansing composition, the thermochromic dyes also being present in an amount sufficient to cause the cleansing composition to change color once the composition has reached a selected temperature and wherein the plurality of thermochromic dyes are further configured to cause the cleansing composition to continue to change color over a temperature range of at least about 3°
C. once the composition is heated to the selected temperature, the plurality of thermochromic dyes including a first thermochromic dye, a second thermochromic dye, and a third thermochromic dye, the first thermochromic dye undergoing a color change at a temperature of from about 23°
C. to about 28°
C., the second thermochromic dye undergoing a color change at a temperature higher than the temperature at which the first thermochromic dye undergoes a color change, the second thermochromic dye undergoing a color change at a temperature of from about 27°
C. to about 32°
C., the third thermochromic dye undergoing a color change at a temperature higher than the temperatures at which the first thermochromic dye and the second thermochromic dye change color, the third thermochromic dye undergoing a color change at a temperature of from about 31°
C. to about 36°
C. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57)
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Specification