Leave-On Scalp Composition That Stays Put Without Hair Matting
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Solution Overview
Problem
Existing scalp treatments, both rinse-off and leave-on, face challenges such as difficulty in application, irritation, and negative impact on hair, while leave-on products for styling often contain volatile organics that can cause skin irritation.
Innovation Solution
Aqueous scalp treatment compositions with laureth-9 and specific rheological parameters, packaged in an applicator with a long, narrow nozzle, effectively treat scalp issues like itch, flaking, and dryness without causing irritation, and are easy to apply directly to the scalp.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If leave-on scalp treatment compositions are used to treat scalp symptoms, then treatment effectiveness is improved, but the products may drip down the head and get in the user's hair
Solution Approach 1:
The patent modifies the rheological parameters of the composition by adjusting viscosity to a specific range (10-100 cP) and incorporating laureth-9 surfactant at controlled concentrations. These parameter changes enable the composition to maintain stability on the scalp without dripping, while remaining easy to apply and not matting the hair.
2Quantity of substance
If rinse-off scalp treatment products are used, then treatment coverage is improved, but they require five to ten minutes of waiting time and may stain clothing and hair
Solution Approach 1:
The patent extracts the beneficial treatment coverage of rinse-off products while eliminating their drawbacks by formulating a leave-on composition with optimized rheological properties. The composition provides sufficient coverage and adherence to the scalp, making the rinsing step unnecessary and eliminating associated waiting time and staining issues.
3Ease of manufacture
If leave-on hair styling products are used, then hair aesthetics are improved, but they contain volatile organics that cause skin irritation
Solution Approach 1:
The patent changes the chemical composition parameters by using laureth-9 surfactant and limiting volatile organic content. The formulation achieves desirable application properties and hair aesthetics without the skin irritation caused by high levels of volatile organics, making it safe for leave-on use on the scalp.
4Ease of operation
If the composition viscosity is too low, then easy dispensing is improved, but the composition runs and drips down the head
Solution Approach 1:
The patent optimizes the viscosity parameter to a narrow range (10-100 cP) and adjusts the laureth-9 concentration to achieve the desired balance. This parameter optimization ensures the composition is fluid enough for easy dispensing through the applicator nozzle while being viscous enough to stay in place on the scalp without running or dripping.
Data Source
AI summary
The present disclosure relates to topical scalp care compositions that may be used as leave-on treatments and comprise one or more actives useful for treating symptoms of itch, redness, flaking, and dryness of the scalp. The present disclosure further relates to systems and methods of treating symptoms of itch, redness, flaking, and dryness of the scalp using such topical scalp care compositions.