Self-Tanning Composition Using Cyclodextrin to Reduce Maillard Odor
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Solution Overview
Problem
Commercial dihydroxyacetone-containing skin-tanning preparations suffer from physical and chemical degradation, leading to discoloration and unpleasant odors due to the Maillard reaction, which affects stability and skin-tanning efficiency.
Innovation Solution
Formulations incorporating an effective amount of dihydroxyacetone or erythrulose as skin-tanning agents, combined with expanded starch-based polysaccharides containing at least 50% amylopectin as odor-mitigating compounds, in a cosmetically-acceptable carrier, which stabilize the composition and reduce malodors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dihydroxyacetone is used as a skin-tanning agent, then an artificial tan can be achieved, but unpleasant odors are generated due to the Maillard reaction
Solution Approach 1:
Cyclodextrin is used as an intermediary substance that forms inclusion complexes with dihydroxyacetone. This mediator approach allows the tanning agent to remain stable and effective while preventing its direct reaction with skin proteins that causes Maillard reaction odors. The cyclodextrin encapsulates the active ingredient, controlling its release and interaction with the skin.
Solution Approach 2:
The patent changes the physical and chemical parameters of the dihydroxyacetone by forming inclusion complexes with cyclodextrin. This parameter change modifies the reactivity and volatility of the tanning agent, reducing its tendency to undergo Maillard reaction while maintaining its skin-penetrating and tanning capabilities.
2Duration of action of stationary object
If dihydroxyacetone-containing preparations are stored for extended periods, then the product remains available for use, but physical and chemical degradation occurs leading to discoloration and unpleasant odors
Solution Approach 1:
The cyclodextrin is pre-mixed with dihydroxyacetone during formulation to create inclusion complexes before the product reaches the consumer. This preliminary action of encapsulation prevents degradation reactions from occurring during storage, as the cyclodextrin protection is already in place before any potential Maillard reaction or oxidation can take place.
Solution Approach 2:
Cyclodextrin acts as a protective intermediary during storage, physically separating dihydroxyacetone from oxygen and other substances that could cause degradation. This mediator effect maintains the chemical integrity of the tanning agent throughout the product shelf life.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The compositions provide a stable artificial tan while significantly reducing unpleasant odors associated with the Maillard reaction, maintaining skin-tanning efficiency and stability over time.
Implementation Method 1
expanded starch-based polysaccharides containing at least about 50% amylopectin as odor-mitigating compounds
Data Source
AI summary
The present invention provides novel cosmetic compositions for artificially tanning the skin, utilizing skin-tanning agents and odor-mitigating materials, such as specifically defined starch materials. The compositions reduce the undesirable odors associated with the reaction between the skin-tanning agents, such as dihydroxyacetone, and the skin (chemically known as the Maillard reaction). The method of using those compositions and of formulating those compositions is also disclosed.