Cosmetic Setter Composition Preventing Polyphenol Aggregation

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Solution Overview

Problem

Current cosmetic compositions for keratin materials face challenges in providing long-lasting, comfortable, and stable color retention while avoiding oxidation and hydrolysis of polyphenols, leading to aggregation issues.

Innovation Solution

A composition comprising a polyphenol with at least two phenol groups, a (poly)glycerolated or polyoxyalkylenated nonionic compound, a solvent system with water and a C2-C5 monoalcohol, and a sulfur-containing antioxidant, along with optional gelling and chelating agents, to inhibit precipitate formation and enhance stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If polyphenols are used in cosmetic compositions to provide natural ingredients and environmental compatibility, then consumer demand for natural ingredients is met, but polyphenols undergo oxidation and hydrolysis leading to aggregation and precipitate formation

Engineering Contradiction:

Improvenatural ingredient compatibilityVSAvoidpolyphenol stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent introduces an intermediary substance (compound Y) that mediates between the polyphenol (compound X) and the solvent system. This intermediary forms a complex with the polyphenol, preventing direct interaction between polyphenol and water that would cause oxidation and hydrolysis, thereby maintaining polyphenol stability while preserving the natural ingredient benefit

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the chemical parameters of the polyphenol by modifying its molecular structure or adding functional groups that alter its reactivity. This prevents oxidation and hydrolysis reactions while maintaining the polyphenol's essential properties, thus resolving the contradiction between natural ingredient use and compositional stability

Inventive Principle:

Principle #35Parameter changes

2Reliability

If conventional synthetic polymers and silicone resins are used to achieve long-lasting makeup and waterproof effects, then staying power and resistance to external forces are improved, but comfort and natural ingredient preference are compromised

Engineering Contradiction:

Improvestaying powerVSAvoidnatural ingredient preference

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent creates a composite material system combining polyphenols (natural ingredients) with specific solvent systems and stabilizing agents. This composite formulation achieves the desired staying power and resistance to external forces while maintaining natural ingredient benefits, replacing conventional synthetic polymers and silicone resins

Inventive Principle:

Principle #40Composite materials

3Object-affected harmful factors

If polyphenols are used to provide natural composition, then ingredient safety and environmental compatibility are improved, but color stability and resistance to darkening are worsened due to oxidation

Engineering Contradiction:

Improveingredient safetyVSAvoidcolor stability

Core Design Contradiction:

Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The patent creates an inert environment for the polyphenol by using a specific solvent system and adding stabilizing agents that prevent oxidation. This protective environment maintains the polyphenol's safety and natural properties while preventing color darkening and maintaining color stability throughout the product's shelf life and during application

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

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 composition achieves improved stability and comfort, reducing polyphenol aggregation and color darkening, maintaining cosmetic effects over time with enhanced resistance to external forces.

Implementation Method 1

improved stability and comfort, reducing polyphenol aggregation and color darkening

Methodology Applied

Scientific EffectOxidation: Oxidation

Implementation Method 2

at least one C2-C5 monoalcohol in an amount effective to inhibit formation of a precipitate of compound X and compound Y in the composition prior to application

Methodology Applied

Scientific EffectSolubility: Solvation

Data Source

PatentUS20230346664A1Compositions suitable as setters

Publication Date: 2023.11.02 LOREAL SA

AI summary

The invention relates to compositions, in particular setter compositions for cosmetics, including (1) at least one polyphenol X comprising at least two different phenol groups; (2) at least one (poly)glycerolated and/or polyoxyalkylenated nonionic compound Y; (3) a solvent system including (i) water in an amount of at least about 10% by weight with respect to the total weight of the composition; and (ii) at least one C2-C5 monoalcohol in an amount effective to inhibit formation of a precipitate of compound X and compound Y in the composition prior to application; and (4) at least one sulfur-containing antioxidant, as well as to methods, kits and sets comprising such compositions in container(s) or in application.