Multi-Phase Skincare Composition Viscosity Ratio
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multi-phase skincare compositions with varying viscosities face challenges in maintaining a stable visually distinct pattern during transit and dispensing, as one phase may flow more freely than the other, leading to inconsistent proportions when dispensed.
Innovation Solution
A multi-phase, fluid skincare composition comprising a cream phase and a gel phase, where the cream phase has a viscosity of at least 15 Pa·s and the gel phase has a viscosity of at least 10 Pa·s, with a viscosity ratio of 1.25 or greater, and a weight ratio of the cream phase to the gel phase within the range of 65:35 to 35:65, ensuring stability and consistent dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If multi-phase compositions are made with varying viscosities to differentiate phases, then visual distinction and phase separation are improved, but phase stability during transit and dispensing deteriorates
Solution Approach 1:
The patent applies parameter changes by carefully controlling the viscosity ratio between cream and gel phases, and adjusting the weight ratio within specific ranges (cream phase 35-65%, gel phase 35-65%). This resolves the contradiction by finding optimal parameter values that maintain both visual distinction and phase stability during transit and dispensing.
2Stability of the object's composition
If viscosity of cream phase is increased to match rheological profiles, then phase stability is improved, but composition becomes more prone to pilling on skin
Solution Approach 1:
The patent changes the viscosity parameter by setting the cream phase viscosity to at least 15 Pa·s and gel phase viscosity to at least 10 Pa·s, with a viscosity ratio of 1.25 or greater. This specific parameter range maintains phase stability while avoiding the harmful effect of pilling that occurs with higher viscosities.
3Stability of the object's composition
If viscosity of phases is altered to achieve matching rheological profiles, then phase stability is improved, but skin-feel of composition deteriorates
Solution Approach 1:
The patent optimizes the viscosity parameters within specific ranges (cream phase ≥15 Pa·s, gel phase ≥10 Pa·s, ratio ≥1.25) to achieve a balance where phase stability is improved without compromising skin-feel. This allows the composition to remain fluid and pleasant on skin while maintaining stable phase separation.
4Reliability
If separate chamber packaging is used to keep incompatible ingredients separate, then ingredient compatibility is improved, but manufacturing complexity and packaging material increase
Solution Approach 1:
The patent merges incompatible ingredients into a single multi-phase composition where cream and gel phases coexist in one container. This eliminates the need for complex multi-chamber packaging while maintaining ingredient compatibility through controlled phase separation, simplifying both packaging structure and manufacturing.
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 a stable visually distinct pattern of the cream and gel phases during transit and dispensing, ensuring consistent proportions of both phases are obtained with each use, thereby enhancing user experience and product efficacy.
Implementation Method 1
the oil and/or silicone component of the cream phase of the present invention repels the gel phase of the present invention, forming surface tension between the two phases
Data Source
AI summary
According to the present invention there is provided a multi-phase, fluid skincare composition comprising (a) at least one cream phase; and (b) at least one gel phase; wherein the cream phase and the gel phase are visually distinct phases that are packaged in physical contact; wherein the viscosity ratio of the cream phase to the gel phase is 1.25 or greater:1 or 1:1.25 or greater, preferably 1.25 or greater:1; wherein the viscosity of the cream phase is at least 15 Pa-s; wherein the viscosity of the gel phase is at least 10 Pa-s; wherein the cream phase and the gel phase are present in the composition at a level such that the weight ratio of cream phase to the gel phase is within the range of from 65:35 to 35:65; and wherein the viscosity is measured at 23° C. The present invention also provides a collapsible tube having an outlet bore and containing the composition as defined above, wherein the tube is filled such that, when the composition is extended from the outlet bore, the extruded composition comprises the cream phase and the gel phase that are visually distinct from one another and within a weight ratio of the cream phase to the gel phase of between 65:35 and 35:65 across the cross-section of the extrusion. The present invention also provides a use of the composition defined above for the purpose of one or more of moisturising the skin, including hydrating the skin, improving the radiance of the skin, improving skin suppleness, reducing skin tightness, nourishing skin and/or reducing dryness. The present invention also provides a use of the composition defined above for the purpose of topical application to any one or more of the face, the neck skin and/or the decollete, preferably the face.