Color changing hand soap composition

• US 20050233918A1
• Filed: 06/20/2005
• Published: 10/20/2005
• Est. Priority Date: 10/23/2003
• Status: Active Grant

• Current Assignee: Sarah Rich
• Original Assignee: Sarah Rich
• Inventors: Rich, Sarah
• Granted Patent: US 7,307,051 B2
• Time in Patent Office: Days
• US Class Current: 510/136
• CPC Class Codes: A61K 2800/45 Colour indicators, e.g. pH- or Redox indicators
• CPC Class Codes: A61K 2800/654 The particulate/core comprising macromolecular material
• CPC Class Codes: A61K 2800/88 Two- or multipart kits
• CPC Class Codes: A61K 8/0241 Containing particulates characterized by their shape and/or structure see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/733 Alginic acid; Salts thereof
• CPC Class Codes: A61K 8/9789 Magnoliopsida [dicotyledons]
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations

Abstract

A composition can indicate whether hands have been washed for an approximate predetermined period of time. The composition includes a pH indicator and a delivery system. The delivery system contains a pH-altering compound. The delivery system is added to the pH indicator approximately when hand washing begins. A method of washing hands is also presented. The pH indicator is applied to the hands. The delivery system is applied to the hands approximately when hand washing begins. The pH indicator and delivery system are mixed. A system for washing hands is also presented. The system includes a pH indicator, a delivery system, and a dispenser that releases the pH indicator and delivery system to hands. The hands are washed until the pH indicator changes color.

Claims

1. A method of washing hands for an approximate predetermined period of time, the method comprising:

a. applying a pH indicator to the hands;

b. applying a delivery system comprising a pH-altering compound to the hands; and

c. mixing the pH indicator with the delivery system.

2. The method of claim 1 wherein the pH indicator is a flavin.

3. The method of claim 2 wherein the flavin is a red cabbage isolate.

4. The method of claim 1 wherein the delivery system further comprises an alginate.

5. The method of claim 1 wherein the pH-altering compound is a bicarbonate.

6. The method of claim 1 further comprising a soap including the pH indicator.

7. The method of claim 1 further comprising a detergent including the pH indicator.