Dual Cationic Polymer Hair Composition for Faster Drying
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Solution Overview
Problem
Current hair drying methods, such as blow-drying, are time-consuming and cause heat damage to hair, necessitating a reduction in heat exposure time while maintaining hair health.
Innovation Solution
An aqueous cosmetic composition comprising two cationic polymers with specific charge densities (2 meq/g to 4 meq/g and 4.1 meq/g to 7 meq/g) and an aminosilicone, applied to hair before or after washing, to reduce drying time when used with a hair dryer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If blow-drying is used to reduce drying time, then drying speed is improved, but heat damage to hair increases
Solution Approach 1:
The invention changes the chemical parameters of the hair surface by applying a composition containing two cationic polymers with specific charge densities (2-4 meq/g and 4.1-7 meq/g) and an aminosilicone. This chemical modification reduces the drying time by altering the hair's interaction with water and heat, allowing faster drying at lower temperatures and thus reducing heat damage.
Solution Approach 2:
The invention uses a composite formulation combining two different cationic polymers with complementary charge densities and an aminosilicone. This composite approach creates synergistic effects where the polymers work together to optimize both drying speed and heat protection, addressing the contradiction between productivity and harmful effects.
2Object-affected harmful factors
If heat exposure time is reduced to minimize damage, then hair health is improved, but drying time increases
Solution Approach 1:
By modifying the hair surface chemistry with the cationic polymer composition, the invention changes the evaporation and heat transfer parameters at the hair surface. This allows efficient moisture removal with reduced heat exposure time, simultaneously improving hair health and maintaining acceptable drying times.
3Reliability
If cationic conditioning polymers with charge density 4.1-7 meq/g are used, then conditioning effect is improved, but drying time reduction is insufficient
Solution Approach 1:
The invention segments the cationic charge density function into two distinct polymer components with different charge densities (2-4 meq/g and 4.1-7 meq/g). Each polymer contributes differently to the overall effect, with one providing conditioning and the other enhancing drying speed, thus resolving the contradiction between reliability and productivity.
Solution Approach 2:
By combining two cationic polymers with different charge densities and an aminosilicone in a composite formulation, the invention achieves both effective conditioning and significant drying time reduction, overcoming the limitation of using single polymers.
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 significantly shortens hair drying time while minimizing heat damage, achieving an 80% water loss in 180 seconds compared to 240 seconds with individual polymers or no polymers.
Implementation Method 1
the combination of two cationic polymers with certain charge densities and an aminosilicone reduces the drying time of hair
Implementation Method 2
two cationic polymers with certain charge densities and an aminosilicone reduces the drying time of hair
Data Source
AI summary
The present invention is on the provision of a composition, method, use of composition to reduce the drying time of keratin fibers, preferably human hair. The composition is aqueous and comprises two or more cationic polymers wherein one of the cationic polymers has a charge density in the range of 2 meq/g to 4 meq/g, and the other cationic polymer has a charge density in the range of 4.1 meq/g to 7 meq/g, and an aminosilicone. A kit of parts is disclosed which comprises the composition and a blow dryer.