Cosmetic Adhesive Composition Flexibility and Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cosmetic adhesives face challenges such as premature failure, difficulty in removal, visible adhesion, and instability in high shine products, which affect their performance and consumer acceptance, particularly in terms of long wear, flexibility, and ease of removal.
Innovation Solution
The development of cosmetic adhesive compositions combining acrylates/VA copolymer and acrylates copolymer in specific ratios, creating a single-phase aqueous formulation that is hydrophilic before application and hydrophobic upon drying, offering flexibility, high gloss, and easy removal with warm water above a certain temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high shine cosmetic products are formulated to provide long term adhesion, then adhesion strength is improved, but the product becomes hard and subject to cracking
Solution Approach 1:
The patent changes the physical-chemical parameters of the adhesive composition by incorporating specific polymers (acrylates/VA copolymer and acrylates copolymer) with controlled molecular weights and compositions. These parameter changes allow the adhesive to maintain flexibility while achieving long-term adhesion strength, resolving the contradiction between strength and flexibility.
Solution Approach 2:
The patent uses composite material systems combining multiple polymer components (acrylates/VA copolymer, acrylates copolymer, and optional film-forming agents) in specific ratios. This composite approach allows the adhesive to exhibit both high adhesion strength and flexibility simultaneously, as each component contributes different properties to the overall system.
2Strength
If film forming agents are used to provide gloss and staying power, then gloss and adhesion are improved, but the product becomes hard and difficult to remove
Solution Approach 1:
The patent modifies the chemical composition parameters by selecting specific film-forming agents and controlling their concentration within optimized ranges. This allows the adhesive to achieve adequate gloss and adhesion while maintaining ease of removal, as the film-forming agents are used at levels that provide performance without excessive hardness.
Solution Approach 2:
The patent applies different functional components in specific zones or ratios within the adhesive formulation. Film-forming agents are incorporated at controlled levels to provide localized gloss and adhesion enhancement without overwhelming the entire system, thereby maintaining flexibility and ease of removal properties.
3Duration of action of stationary object
If cosmetic adhesive is formulated for long wear, then adhesion durability is improved, but the adhesive becomes difficult to remove from skin
Solution Approach 1:
The patent optimizes the chemical composition parameters including polymer molecular weight, crosslinking density, and solvent content to achieve a balance between long-wear durability and ease of removal. By controlling these parameters, the adhesive forms a stable film during wear but remains susceptible to removal with appropriate cleansers.
Solution Approach 2:
The patent introduces complementary cleanser systems that act as intermediaries to facilitate removal of the long-wear adhesive. The cleanser contains ingredients that specifically interact with the adhesive polymers, breaking down the adhesive film without requiring harsh mechanical abrasion, thus enabling easy removal after extended wear.
4Illumination intensity
If pigmented adhesive is used to achieve desired cosmetic look, then aesthetic appearance is improved, but color intensity and true color are lost as solvent evaporates
Solution Approach 1:
The patent optimizes the concentration and type of pigments used in the adhesive formulation, controlling particle size distribution and pigment-to-solvent ratios. These parameter changes ensure that pigments remain suspended uniformly and maintain true color intensity even as the solvent evaporates, preventing color loss while achieving desired aesthetic appearance.
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 compositions provide long wear, smudge resistance, and easy removal while maintaining high shine and true color, ensuring flexibility and comfort on the skin, lips, and nails, with improved stability and consumer acceptance.
Implementation Method 1
creating a single-phase aqueous formulation that is hydrophilic before application and hydrophobic upon drying
Implementation Method 2
The compositions contain no oils, waxes, surfactants or emulsifiers, are water- and oil-resistant upon drying on the skin
Data Source
AI summary
Single phase cosmetic adhesive compositions that are flexible and resistant to water below a selected temperature, 43° C. for example. The adhesive compositions wear well, are smudge and flake resistant, as well as oil resistant, making them very suitable for long wear without adhesive failure. Adhesive compositions according to the invention comprise specific combinations of acrylates/VA copolymer and acrylates copolymer in a cosmetically acceptable base or delivery vehicle. Adhesive compositions according to the invention are hydrophilic and easily removed when scrubbed with water above a certain temperature, but not as easily removed with water below that temperature. The adhesive compositions are easy to manufacture, flexible and comfortable, and suitable for use on skin, lips, hair and nails, particularly to secure strips of false eyelashes and eyebrows, as well as individual lash and brow extensions. Cosmetic adhesives of the present invention may also be used to affix glitter or extensions to skin, hair, lips, or nails, and other cosmetic products to keratinic surfaces.