Oil-in-Water UV Conversion Emulsion for Skin Cell Activation

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Solution Overview

Problem

Existing technologies do not effectively utilize ultraviolet light for skin cell activation and instead focus on protection from its harmful effects, leading to a lack of active use of UV for skin benefits.

Innovation Solution

An oil-in-water type emulsified composition containing a UV wavelength conversion substance, such as inorganic or organic UV wavelength conversion substances, and a water-soluble alkyl-substituted polysaccharide derivative, which converts UV light to visible light for cell activation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If ultraviolet light is used for skin treatment, then cell activation effect is achieved, but harmful effects such as oxidation and DNA damage occur

Engineering Contradiction:

Improvecell activation effectVSAvoidoxidation and DNA damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a wavelength conversion substance as an intermediary between ultraviolet light and skin cells. This substance absorbs harmful ultraviolet light and converts it to visible light with a specific wavelength range (400-700nm) that activates skin cells without causing oxidation or DNA damage. The wavelength conversion substance acts as a mediator that transforms the harmful UV energy into beneficial visible light energy.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent converts the harmful ultraviolet light into beneficial visible light through wavelength conversion. The ultraviolet light that would normally cause skin damage is transformed by the conversion substance into visible light that promotes skin cell activation and metabolism. This principle transforms a harmful factor (UV radiation) into a beneficial treatment modality.

Inventive Principle:

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

2Object-affected harmful factors

If conventional UV protection measures are taken, then skin is protected from harmful effects, but active cell activation benefit is lost

Engineering Contradiction:

Improveprotection from UV damageVSAvoidcell activation effect

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

Instead of using conventional UV blockers that simply prevent UV penetration, this patent uses a wavelength conversion substance as an intermediary that actively transforms UV light into therapeutic visible light. This mediator approach provides both protection from harmful UV effects and delivers the beneficial cell activation effect through the converted visible light.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Quantity of substance

If water-in-oil type emulsion is used, then UV wavelength conversion substance is incorporated, but refreshing feel and skin absorption are reduced

Engineering Contradiction:

ImproveUV wavelength conversion substance incorporationVSAvoidrefreshing feel and skin absorption

Core Design Contradiction:

Quantity of substanceVSEase of operation

Solution Approach 1:

The patent inverts the conventional emulsion structure from water-in-oil to oil-in-water type. This inversion allows the composition to provide a refreshing feel similar to water-based products while still effectively incorporating and delivering the UV wavelength conversion substance to the skin. The oil-in-water structure improves skin absorption and sensory experience compared to traditional water-in-oil formulations.

Inventive Principle:

Principle #13The other way round (Inversion)

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 activates skin cells, improving skin health by promoting metabolism, reducing oxidative stress, and enhancing skin barrier function, while providing a refreshing feel.

Implementation Method 1

containing a UV wavelength conversion substance... converts UV light to visible light for cell activation

Methodology Applied

Scientific EffectWavelength conversion: Fluorescence

Data Source

PatentUS12551424B2Oil-in-water type emulsification composition containing UV wavelength conversion substance

Publication Date: 2026.02.17 SHISEIDO CO LTD

AI summary

To provide a novel oil-in-water type emulsified composition, comprising a UV wavelength conversion substance and a water-soluble alkyl-substituted polysaccharide derivative.