Personalized Sunscreen Base Mixture Emulsion Stability
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Solution Overview
Problem
Existing methods for producing personalized sunscreens by end users face challenges in creating stable, homogeneous formulations, especially for water and oil-based sunscreens with sparingly soluble ingredients, due to difficulties in forming stable emulsions and accommodating a wide range of active cosmetic ingredients.
Innovation Solution
A method using a device with a mixing unit and at least two dispensing vessels, where the base mixture containing an emollient, interface-active substance, and UV filter is mixed with active cosmetic ingredients, allowing for personalized sunscreens with customizable SPF and sensory properties, suitable for various cosmetic forms like creams, gels, and lotions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If end users produce personalized sunscreens domestically using simple processes, then ease of operation and personalization are improved, but manufacturing precision and formulation stability deteriorate due to difficulties in forming stable emulsions with water and oil-based ingredients
Solution Approach 1:
The patent pre-prepares a base mixture containing all necessary emulsion-forming ingredients (emollients, interface-active substances, rheology modifiers) and UV filters in correct proportions. This preliminary preparation eliminates the need for users to precisely measure and mix multiple separate ingredients, ensuring consistent emulsion formation while maintaining ease of domestic production.
Solution Approach 2:
The patent introduces a base mixture as an intermediary substance that contains pre-combined emulsion ingredients. This base mixture acts as a mediator between the complex industrial emulsion-forming process and the simple domestic application, allowing users to achieve stable emulsions without needing to master complex mixing techniques.
2Adaptability or versatility
If a wide range of active cosmetic ingredients are included for personalization, then adaptability and customization options are improved, but formulation stability and emulsion formation deteriorate
Solution Approach 1:
The patent segments the sunscreen formulation into two separate components: a stable base mixture containing emulsion ingredients and UV filters, and separate active cosmetic ingredients that can be added by users. This segmentation allows the base mixture to maintain its emulsion stability while enabling users to personalize with various actives without compromising the fundamental emulsion structure.
Solution Approach 2:
The patent modifies the formulation approach by changing the concentration and pre-combination of emulsion ingredients in the base mixture to create a more stable foundation that can accommodate various active ingredients. The base mixture is formulated with optimized ratios of emollients, interface-active substances, and rheology modifiers to provide a stable matrix for personalized additions.
3Manufacturing precision
If industrial-scale production processes are used for domestic sunscreen production, then manufacturing precision and formulation quality are improved, but device complexity and process regime requirements worsen
Solution Approach 1:
The patent extracts the complex emulsion-forming process from the domestic production step and relocates it to the industrial manufacturing stage. The base mixture is prepared industrially with precise control over emulsion formation, then distributed to users in a stable, ready-to-use form. This extraction eliminates the need for users to have access to complex industrial equipment while maintaining high formulation quality.
Solution Approach 2:
The patent performs the complex emulsion formation and ingredient compatibility testing as a preliminary action during industrial manufacturing. The base mixture is pre-formulated and pre-stabilized before reaching the user, transferring the complexity burden from the domestic setting to the industrial production environment where appropriate equipment and expertise are available.
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
Enables the production of high-quality, personalized sunscreens with a high degree of customization, achieving stability and homogeneity comparable to industrially produced sunscreens, suitable for various skin types and applications.
Implementation Method 1
the contents of the dispensing vessels b1) and b2) are emptied into the mixing device a) and mixed in the mixing device
Implementation Method 2
at least one interface-active substance and at least one UV filter, wherein the contents of the dispensing vessel b1) also comprise at least one rheology modifier
Implementation Method 3
at least one interface-active substance
Data Source
AI summary
The invention lies in the field of personalized sunscreens, the composition of which is partly determined (personalized) by the end user, and relates to a method for production thereof, and to the use of cosmetic mixtures in the dispensing vessels for performance of the method.