Biphasic Cosmetic Composition Spherical Inclusions

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Solution Overview

Problem

Existing cosmetic compositions with a biphasic structure, particularly those using vegetable oils, face challenges in forming a stable spherical or ovoid inclusion within a hydro-alcoholic phase, and often lack transparency and clear interfaces, making them aesthetically unappealing and commercially unviable.

Innovation Solution

A cosmetic composition comprising a hydro-alcoholic phase with at least 50% alcohol and an oily phase containing a mixture of vegetable oils and non-polar oils, with a specific weight ratio, allowing the oily phase to form a transparent or translucent spherical inclusion inside the hydro-alcoholic phase, achieved by judiciously selecting the constituents and their proportions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If vegetable oil is used as the oily phase in a biphasic cosmetic composition, then the composition gains emollient properties and natural appeal, but it fails to form a stable spherical inclusion with clear contours and transparency

Engineering Contradiction:

Improvenatural appeal and emollient propertiesVSAvoidspherical inclusion formation with clear contours

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent combines vegetable oil with apolar oils (hydrocarbons) to create a composite oily phase. This composite formulation enables the formation of stable spherical inclusions with clear contours and transparency while preserving the emollient properties and natural appeal of vegetable oils. The specific combination and proportions of these oils are critical to achieving both the aesthetic appearance and the functional benefits.

Inventive Principle:

Principle #40Composite materials

2Device complexity

If the composition uses a conventional single interface separation between aqueous and oily phases, then the structure is simple, but the aesthetic appearance is poor and commercial viability is reduced

Engineering Contradiction:

Improvephase separation structureVSAvoidaesthetic appearance and commercial viability

Core Design Contradiction:

Device complexityVSEase of manufacture

Solution Approach 1:

The patent transforms the conventional flat horizontal interface between phases into spherical or ovoid inclusions of the oily phase dispersed within the hydro-alcoholic phase. This spherical configuration provides superior aesthetic appearance with clear contours and transparency, making the composition commercially viable while maintaining a relatively simple two-phase structure.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Ease of manufacture

If the oily phase forms spherical inclusions in a hydro-alcoholic phase, then the aesthetic appearance improves, but achieving this with vegetable oil is particularly difficult and often impossible

Engineering Contradiction:

Improveaesthetic appearanceVSAvoidcompatibility with vegetable oil

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent creates a composite oily phase combining vegetable oil with apolar hydrocarbon oils. This composite formulation is specifically adapted to form spherical inclusions in hydro-alcoholic phases, overcoming the inherent difficulty of using vegetable oils alone. The combination enables both the desired aesthetic appearance and compatibility with vegetable oil components.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent modifies the physical and chemical parameters of the oily phase by changing its composition from pure vegetable oil to a composite of vegetable oil and apolar oils. This parameter change includes adjusting the polarity, surface tension, and density characteristics to enable spherical inclusion formation while maintaining vegetable oil benefits.

Inventive Principle:

Principle #35Parameter changes

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 maintains stability, provides an attractive aesthetic appearance with a clear interface, and is suitable for skin and hair care, offering nourishment and perfuming benefits while being commercially viable.

Implementation Method 1

by adjusting the relative densities of the two phases

Methodology Applied

Scientific EffectDensity difference: Density Gradient

Implementation Method 2

by adjusting the surface tensions and densities of the two phases

Methodology Applied

Scientific EffectSurface tension: Surface Tension

Implementation Method 3

a hydro-alcoholic phase containing at least 50% by weight of alcohol and an oily phase containing a mixture of at least one vegetable oil containing one or more unsaturated fatty acid esters, with at least one apolar oil

Methodology Applied

Scientific EffectImmiscibility: Hydrophobe

Data Source

PatentEP3624758B1Biphasic cosmetic composition

Publication Date: 2024.11.13 LAB M&L SA

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AI summary

The invention relates to a cosmetic composition comprising a particular hydro-alcoholic phase and a particular oil phase, allowing the oil phase to form a spherical or ovoid inclusion, of transparent or translucent appearance and with clear contours, inside the hydro-alcoholic phase. The invention also relates to the cosmetic use of the composition for the purpose of nourishing and/or perfuming the skin and/or hair, as well as to a cosmetic method using said composition.