Heat-Stable Mascula Composition Narrow Melting Peak
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Solution Overview
Problem
Existing mascara compositions do not provide optimal curling of eyelashes, as they either fail to maintain cosmetic properties when heated or result in an unattractive makeup result due to loss of homogeneity and eyelash sticking.
Innovation Solution
A cosmetic composition with a thermal profile having a melting peak mid-height width of less than or equal to 20°C, which is heat-stable, comprising a physiologically acceptable medium and at least one compound that maintains viscosity within 25% after multiple heating/cooling cycles, allowing for improved curling and uniform deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If heating instruments are used to curl pre-coated eyelashes, then curling effect is achieved, but the composition film loses homogeneity and eyelashes become stuck together
Solution Approach 1:
The patent modifies the thermal parameters of the mascara composition by incorporating waxes with specific melting point ranges (20-60°C) and using organogelling agents that respond to controlled heating. This allows the composition to undergo predictable phase changes at specific temperatures, enabling curling while maintaining film integrity and preventing lashes from sticking together.
Solution Approach 2:
The patent creates a composite mascara formulation combining multiple waxes (beeswax, carnauba wax, candelilla wax) with organogelling agents and film-forming polymers. This composite structure provides thermal stability and controlled melting behavior, allowing the mascara to withstand heating during curling without losing homogeneity or causing lashes to stick.
2Shape
If heating is applied to achieve curling, then shape change is obtained, but cosmetic properties are degraded
Solution Approach 1:
The patent exploits controlled phase transitions of wax components during heating. The waxes melt at specific temperature ranges (20-60°C) to allow reshaping of eyelashes, then solidify upon cooling to lock in the curled shape. This reversible phase transition enables curling while preserving cosmetic properties, as the composition returns to its stable solid state after heating.
Solution Approach 2:
The patent incorporates heat-stable ingredients and stabilizers in advance to cushion against thermal degradation. The organogelling agents and film-forming polymers are selected to maintain structural integrity during heating, preventing premature degradation of cosmetic properties before the curling effect is achieved.
3Manufacturing precision
If conventional mascara compositions are used, then basic coating is achieved, but optimal curling of eyelashes is not obtained
Solution Approach 1:
The patent achieves precise curling control by carefully selecting waxes with specific melting point parameters (20-60°C range) and using organogelling agents with controlled gelation temperatures. These parameter specifications enable predictable response to heating during curling, providing optimal curling precision while maintaining reasonable manufacturing complexity through the use of commercially available ingredients.
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 heat-stable cosmetic composition effectively maintains curling properties and homogeneity when heated, providing a long-lasting, attractive eyelash curl without degrading the mascara film.
Implementation Method 1
a thermal profile having a melting peak whose mid-height width Lf is less than or equal to 20° C.
Implementation Method 2
a thermal profile having a melting peak whose mid-height width Lf is less than or equal to 20° C.
Implementation Method 3
This cosmetic composition may be used for instance, in combination with a heating instrument, such as a heating brush
Implementation Method 4
wherein the composition is heat-stable... the viscosity after performing the X number of melting/cooling cycles is compared with that measured before the first cycle
Data Source
AI summary
The present disclosure relates to a cosmetic composition comprising, in a physiologically acceptable medium, at least one compound which gives the cosmetic composition a thermal profile having a melting peak wherein the mid-height width Lf is less than or equal to 20° C., and wherein the composition is heat-stable. The present disclosure also relates to the process of depositing a film on the keratin fibers, wherein the film is homogenous and/or has improved curling properties, comprising applying the cosmetic composition disclosed herein to keratin fibers.