Water-in-Oil Body Milk Composition for Stable Skin Hydration

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Solution Overview

Problem

Existing cosmetic preparations face challenges in maintaining stability and absorption capacity while avoiding petroleum-derived ingredients, particularly in water-in-oil emulsions, leading to phase separations and sensorial issues, and often contain undesirable additives like BHT and polyethylene glycol ethers.

Innovation Solution

A cosmetic preparation comprising hyaluronic acid, diisostearoyl polyglyceryl-3 dimer dilinoleate, polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate, tocopherol, and specific lipids, forming a skin-moisturizing water-in-oil emulsion that is free from certain synthetic and mineral ingredients, stabilizing the emulsion and enhancing moisture retention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If petroleum-derived ingredients and synthetic additives are used in water-in-oil emulsions, then stability and absorption capacity are improved, but harmful factors and undesirable additives are introduced

Engineering Contradiction:

Improveemulsion stabilityVSAvoidundesirable additives like BHT and polyethylene glycol ethers

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent removes harmful synthetic additives (BHT, polyethylene glycol ethers, mineral oils) from the formulation while maintaining emulsion stability through natural alternatives. This extraction of harmful components resolves the contradiction by eliminating undesirable additives while preserving the essential stability function through hyaluronic acid and natural lipid combinations.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the chemical composition parameters by replacing synthetic emulsifiers and stabilizers with natural alternatives (hyaluronic acid, diisostearoyl polyglyceryl-3 dimer dilinoleate, polyglyceryl-4 diisostearate). This parameter change maintains emulsion stability through different chemical mechanisms that avoid harmful additives.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If petroleum-derived ingredients are used, then absorption capacity is improved, but sensorial issues and phase separations occur

Engineering Contradiction:

Improveabsorption capacityVSAvoidphase separation

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The patent converts the potential harm of avoiding petroleum ingredients into a benefit by using natural lipids and hyaluronic acid that provide both absorption capacity and stability. The natural lipid combination (diisostearoyl polyglyceryl-3 dimer dilinoleate, polyglyceryl-4 diisostearate) serves dual functions: enabling skin absorption while preventing phase separation, thus converting the constraint into an advantage.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Object-affected harmful factors

If natural ingredients are used to avoid petroleum products, then harmful factors are reduced, but stability and sensorial properties deteriorate

Engineering Contradiction:

Improvepetroleum-derived ingredientsVSAvoidemulsion stability

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent creates a composite system combining multiple natural ingredients (hyaluronic acid, diisostearoyl polyglyceryl-3 dimer dilinoleate, polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate, and natural lipids) that work synergistically to provide both stability and natural composition. This composite approach resolves the contradiction by achieving emulsion stability through multiple natural components rather than single petroleum-based additives.

Inventive Principle:

Principle #40Composite materials

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 formulation achieves improved skin hydration and stability, as evidenced by higher Corneometer values, without the use of undesirable additives, addressing the challenges of phase separation and sensorial issues in existing products.

Implementation Method 1

Due to their hydrophilic acid groups and the hydroxyl groups, HA has the ability to form a plurality of hydrogen bonds via which hydrations can be added

Methodology Applied

Scientific EffectHydrogen bonding:

Implementation Method 2

HA is capable of binding more and more water with extension of the average chain spacing

Methodology Applied

Scientific EffectHydration:

Implementation Method 3

diisostearoyl polyglyceryl-3 dimer dilinoleate, polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate... stabilizing the emulsion

Methodology Applied

Scientific EffectEmulsion stabilization: Emulsion

Implementation Method 4

tocopherol... free from BHT... stabilizing the emulsion

Methodology Applied

Scientific EffectAntioxidation: Oxidation

Implementation Method 5

water-in-oil emulsion that is free from certain synthetic and mineral ingredients, stabilizing the emulsion and enhancing moisture retention

Methodology Applied

Scientific EffectEmulsion phase separation prevention: Emulsion

Data Source

PatentUS12544327B2Body milk

Publication Date: 2026.02.10 BEIERSDORF AG

AI summary

A body milk for improved skin moisturization comprises hyaluronic acid and/or salts thereof, diisostearoyl polyglyceryl-3 dimer dilinoleate, polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate, tocopherol, and one or more lipids selected from isopropyl palmitate, isododecane, almond oil (Prunus amygdalus dulcis oil), sunflower oil (Helianthus annuus seed oil), coco-caprylate/caprate, Butyrospermum parkii butter. The preparation is free of BHT.