Oral Care Compositions with Increased Whitening Efficacy

Abstract

A dual-phase mouthwash composition for whitening teeth is disclosed. The dual-phase mouthwash composition includes an orally acceptable vehicle having a hydrophilic phase and a hydrophobic phase, a blue dye and/or blue pigment having a blue to blue-violet color with a hue angle in the CIELAB system from about 200 to about 320 degrees, and a zinc salt.

Description

BACKGROUND[0001]As is known in the art, the visual perception of a white substance can be altered through the deposition of a blue pigment and / or a blue dye. This effect is commonly used in laundry detergent products to make white clothes appear “whiter” to the human eye. This effect has also been applied to oral care products (e.g., toothpastes). For example, the blue dye and / or the blue pigment added to the oral care products may be deposited onto teeth, thereby allowing the off-white and / or yellow color of the teeth to appear whiter to the human eye.[0002]While these oral care products provide effective whitening after only a single use, the blue dye and / or the blue pigment may only remain deposited on the teeth for a limited duration, thereby allowing the yellow stains to eventually reappear. Increasing the relative concentration of blue dye and / or blue pigment delivered to the teeth may increase the duration of deposition on the teeth and / or improve the perceived whiteness of t...

AI Technical Summary

Benefits of technology

[0003]This summary is intended merely to introduce a simplified summary of some aspects of one or more embodiments of the present disclosure. Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. This summary is not an extensive overview, nor is it intended to identify key or critical elements of the present teachings, nor to delineate the scope of the disclosure. Rather, its purpose is merely to present one or more concepts in simplified form as a prelude to the detailed description below.

Problems solved by technology

While these oral care products provide effective whitening after only a single use, the blue dye and / or the blue pigment may only remain deposited on the teeth for a limited duration, thereby allowing the yellow stains to eventually reappear.