Shampoo Cooling Sensation via Cyclohexanecarboxamide Substitution
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Solution Overview
Problem
Current hair care shampoos fail to provide a long-lasting cooling sensation and are often associated with unpleasant odors or flavors, limiting consumer satisfaction and compliance with anti-dandruff treatments.
Innovation Solution
Incorporating specific cyclohexanecarboxamide structures, such as 5-methyl-2-(1-methylethyl)-N-(2-phenylethyl)- and 5-methyl-2-(1-methylethyl)-N-phenyl-cyclohexanecarboxamide derivatives, which deliver enhanced cooling and warming sensations at low concentrations, allowing for formulation efficiencies and improved consumer experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If menthol is used as a coolant in shampoo, then cooling sensation is provided, but the cooling duration is short (1-60min) and unpleasant metallic or medicinal smell is generated
Solution Approach 1:
The patent changes the chemical parameters by substituting menthol with WS-3 (N-ethyl-p-menthan-3-carboxamide), a structurally related compound that provides prolonged cooling sensation without the transient effect and unpleasant odor of menthol, thereby resolving the contradiction between cooling sensation and cooling duration
Solution Approach 2:
The patent uses a composite approach by combining WS-3 coolant with specific fragrance systems (including fragrant compounds and optionally essential oils) to create a shampoo formulation that delivers both prolonged cooling and pleasant aroma, eliminating the metallic medicinal smell associated with menthol
2Temperature
If menthol is used as a coolant in shampoo, then cooling sensation is provided, but unpleasant metallic or medicinal smell is generated
Solution Approach 1:
The patent extracts and eliminates the harmful metallic medicinal odor associated with menthol by replacing it with WS-3, which provides cooling sensation without the unpleasant smell, thereby separating the desirable cooling effect from the undesirable odor
Solution Approach 2:
The patent introduces WS-3 as an intermediary substance that mediates between the cooling function and odor profile, providing the desired cooling sensation while avoiding the unpleasant metallic medicinal smell of menthol, and allows integration with pleasant fragrances
3Temperature
If high concentration of coolant is used, then cooling intensity is increased, but formulation complexity and cost increase
Solution Approach 1:
The patent changes the concentration parameter by achieving effective cooling intensity with low concentrations of WS-3 (0.01-10% w/w), which is more efficient than menthol, thereby reducing formulation complexity and avoiding the need for high coolant concentrations
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
These compounds provide a prolonged cooling effect, enhancing consumer satisfaction and compliance with anti-dandruff treatments by offering a pleasant, fresh sensation without the drawbacks of menthol, such as transient cooling and unpleasant odors, while maintaining efficacy at low use levels.
Implementation Method 1
coolant compounds...deliver enhanced cooling and warming sensations...The scalp cooling sensation that menthol can deliver via a shampoo remains for a short amount of time after shampooing
Data Source
AI summary
Hair care shampoo compositions containing a perfume system comprising one or more coolants, wherein the cool sensation provided by the coolant is enhanced in terms of quicker onset, greater intensity, and/or longer duration, thereby improving appeal and acceptability of the compositions to consumers.