Blonding Mousse with Zwitterionic Surfactant for Stable Foam
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Solution Overview
Problem
Oxidative hair lightening agents face challenges such as ammonia odor and irritation, complex mixing of powdered bleaching salts with viscous alkalizing and developer preparations, and instability of foam applications, which affect uniformity and fiber damage.
Innovation Solution
A method involving a ready-to-use oxidative hair lightening agent formulated with a zwitterionic surfactant, an alkalizing agent, and a peroxo salt, mixed and dispensed as a stable foam to ensure easy application and reduced ammonia content, improving stability and whitening performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ammonia is used as an alkalizing agent to accelerate the lightening reaction, then good lightening results are achieved, but unpleasant odor and skin/mucous membrane irritation occur
Solution Approach 1:
The patent replaces ammonia with alternative alkalizing agents such as alkanolamines (monoethanolamine, diethanolamine, triethanolamine) or inorganic bases (sodium hydroxide, potassium hydroxide), changing the chemical composition parameter to eliminate harmful odor and irritation while maintaining the required alkaline pH for effective lightening reaction
Solution Approach 2:
The patent uses readily available alkalizing agents that can be easily incorporated into the lightening composition, replacing ammonia with substances that provide similar chemical functionality without the harmful side effects, making the product more user-friendly and safer
2Quantity of substance
If powdered bleaching salts are mixed with viscous cream- or paste-like alkalizing and developer preparations, then complete lightening components are combined, but the mixing process becomes complex and difficult to achieve uniform mixture
Solution Approach 1:
The patent changes the physical state parameter of the bleaching salt component from powder to solution form, allowing all components to be mixed in liquid phase which greatly simplifies the mixing process and ensures uniform distribution of ingredients throughout the composition
Solution Approach 2:
The patent creates a homogeneous composite mixture by dissolving bleaching salts in the alkalizing and developer preparations, forming a unified liquid composition where all active ingredients are uniformly distributed, eliminating the complexity of mixing powders with viscous materials
3Ease of operation
If foam application is used to achieve gentle and even coloring results, then user-friendly application is improved, but foam stability becomes problematic causing quick collapse and dripping
Solution Approach 1:
The patent adjusts the chemical composition parameters by incorporating specific surfactants and conditioning agents that enhance foam stability, modifying the physical and chemical properties of the foam structure to prevent quick collapse while maintaining gentle application characteristics
Solution Approach 2:
The patent uses foam-stabilizing agents as intermediary substances that mediate between the lightening components and the foam structure, providing structural support to the foam bubbles and preventing premature collapse while allowing the lightening agents to remain in contact with the hair
4Productivity
If large amounts of salts are present in the lightening composition, then effective lightening action is achieved, but foam stability is negatively affected
Solution Approach 1:
The patent introduces foam-stabilizing agents and surfactants as intermediary substances that counteract the destabilizing effect of salts on foam structure, allowing high salt concentrations to be maintained for effective lightening while the intermediaries preserve foam stability for gentle application
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 solution provides a stable, ammonia-free, and user-friendly hair lightening process with improved whitening results and reduced fiber damage, maintaining foam stability and uniformity.
Implementation Method 1
The composition (A) additionally comprises at least one zwitterionic surfactant of formula (I)
Implementation Method 2
The oxidizing agents, usually at least hydrogen peroxide, serve to destroy natural melanin pigments
Implementation Method 3
Dispensing the ready-to-use brightening agent from a foam dispenser container and distributing the ready-to-use agent onto the fibers
Data Source
AI summary
The present application provides processes for lightening keratinic fibres, comprising the steps of i. producing the ready-to-use lightening composition immediately prior to application by combining a composition (A) comprising at least one alkalizing agent, a composition (B) comprising at least one oxidizing agent, and a composition (C) comprising at least one peroxo salt, and then mixing, ii. deploying the ready-to-use lightening composition from a foam dispensing vessel and distributing the ready-to-use composition onto the fibres, iii. leaving the lightening composition on the fibres for a period of 1 to 60 min, iv. and washing the remaining lightening composition out of the fibres.