Cosmetic Setter Composition for Polyphenol Stability and Comfort

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Solution Overview

Problem

Existing cosmetic compositions for long-lasting makeup lack stability, comfort, and environmental sustainability, particularly in the presence of polyphenols like tannic acid, which are prone to oxidation and hydrolysis, leading to aggregation of byproducts.

Innovation Solution

A composition comprising polyphenols with at least two different phenol groups, (poly)glycerolated and/or polyoxyalkylenated nonionic compounds, a solvent system with water and C2-C5 monoalcohols, a chelating agent, and ascorbic acid, with a pH less than 7, to inhibit precipitate formation and enhance stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If polyphenols like tannic acid are used in cosmetic compositions, then natural ingredients and environmental sustainability are improved, but stability deteriorates due to oxidation and hydrolysis leading to aggregation of byproducts

Engineering Contradiction:

Improveenvironmental sustainabilityVSAvoidcomposition stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent introduces a chelating agent as an intermediary substance that binds to metal ions, preventing them from catalyzing oxidation and hydrolysis of polyphenols. This mediator protects the polyphenols without altering their natural properties, thus maintaining both environmental sustainability and composition stability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent creates a protective chemical environment by incorporating antioxidants and chelating agents that prevent oxidative and hydrolytic reactions. This inertifying the composition towards degradation pathways, allowing polyphenols to remain stable while preserving their natural characteristics.

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

2Duration of action of stationary object

If conventional synthetic coating polymers and silicone resins are used, then long-lasting makeup and resistance to external forces are improved, but comfort and natural tolerance deteriorate

Engineering Contradiction:

Improvestaying powerVSAvoidcomfort

Core Design Contradiction:

Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent creates a composite system combining polyphenols with (poly)glycerolated and/or polyoxyalkylenated nonionic compounds. This composite approach integrates the natural, comfortable properties of polyphenols with the film-forming, long-lasting characteristics of the nonionic compounds, achieving both comfort and staying power simultaneously.

Inventive Principle:

Principle #40Composite materials

3Adaptability or versatility

If polyphenols are used to provide natural ingredients, then environmental sustainability and tolerance are improved, but precipitation and aggregation occur leading to composition instability

Engineering Contradiction:

Improvenatural ingredientsVSAvoidprecipitate formation

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The chelating agent acts as a mediator that prevents aggregation of polyphenol molecules by binding to metal ions that would otherwise catalyze precipitation. This intermediary protection allows polyphenols to remain dissolved and stable while maintaining their natural ingredient status.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent extracts and removes the harmful factor (metal ions) from the system through chelation, separating them from the polyphenols. This extraction prevents the metal ions from catalyzing aggregation and precipitation, thus eliminating the harmful effect while preserving the beneficial natural polyphenol properties.

Inventive Principle:

Principle #2Taking out (Extraction)

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 provides improved stability, comfort, and long-lasting cosmetic effects on keratin materials by preventing polyphenol aggregation and maintaining color integrity under external forces.

Implementation Method 1

at least one chelating agent

Methodology Applied

Scientific EffectChelation:

Implementation Method 2

prone to oxidation and hydrolysis

Methodology Applied

Scientific EffectOxidation: Oxidation

Implementation Method 3

inhibit formation of a precipitate of compound X and compound Y

Methodology Applied

Scientific EffectPrecipitation: Precipitation

Implementation Method 4

at least one (poly)glycerolated and/or polyoxyalkylenated nonionic compound

Methodology Applied

Scientific EffectHydrogen bonding:

Data Source

PatentUS20260014062A1Compositions suitable as setters

Publication Date: 2026.01.15 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; (4) at least one chelating agent; and (5) at least one ascorbic acid compound, as well as to methods, kits and sets comprising such compositions in container(s) or in application.