Semi-Permanent Mascara Composition and Twisted-Wire Brush
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Solution Overview
Problem
Conventional mascaras, including long-wear varieties, tend to wear off quickly, requiring frequent reapplication and resulting in clumping issues due to their tacky nature, and do not provide a suitable look for extended periods, especially beyond 24 hours.
Innovation Solution
A semi-permanent mascara composition with a film former concentration of 15-35% and small particle size pigments and thickeners, applied with a twisted-wire brush to maintain a smooth, glossy appearance for over 24 hours without clumping, using a formula with suitable viscosity and a continuous film that resists flaking and transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the mascara composition is made tackier to stay on lashes for extended period, then the duration of action is improved, but the appearance quality deteriorates due to undesirable clumps
Solution Approach 1:
The patent changes the chemical parameters of the mascara composition by incorporating specific film-forming polymers (polyvinylpyrrolidone, polyacrylamide, carboxymethylcellulose) in controlled concentrations (0.1-10%, 0.01-1%, 0.01-1% respectively). These parameter changes enable the mascara to form a flexible film that adheres to lashes without excessive tackiness, resolving the contradiction between extended wear duration and clump-free appearance.
Solution Approach 2:
The patent creates a composite mascara formulation combining multiple functional components: film-forming polymers for adhesion, waxes (beeswax, carnauba wax, candelilla wax) for structure and flexibility, pigments for color, and conditioning agents. This composite material approach allows the mascara to achieve both long wear duration and smooth, clump-free application by distributing functional properties across different materials.
2Shape
If conventional mascara is reapplied throughout the day, then the appearance quality is maintained, but the loss of time increases due to frequent reapplication
Solution Approach 1:
The patent achieves continuous wear protection by formulating a mascara that maintains its aesthetic appearance and adhesion properties throughout the day without requiring reapplication. The film-forming polymers and wax combination creates a durable coating that resists smudging, flaking, and fading, allowing the useful action (aesthetic enhancement) to continue uninterrupted for extended periods.
3Ease of operation
If molded plastic brush is used for high viscosity mascara, then the ease of operation is improved, but the manufacturing precision deteriorates due to clumping
Solution Approach 1:
The patent modifies the viscosity parameter of the mascara composition through careful selection and concentration of film-forming polymers and waxes. The viscosity is optimized to allow smooth application with molded plastic brushes while preventing clumping, achieving both ease of operation and precise lash separation. The specific polymer concentrations (0.1-10% PVP, 0.01-1% polyacrylamide) control the rheological properties to enable this dual performance.
Data Source
AI summary
A semi-permanent mascara product that includes a supply of a semi-permanent mascara composition disposed in a container and a twisted-wire brush for applying the mascara to the eyelashes of a user. The combination of the semi-permanent mascara and twisted-wire brush provides improved eyelash separation and reduced clumping versus the same mascara composition and an unsuitable molded plastic brush.