Dry Shampoo Tablet Fabrication Using Freeze-Drying
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Solution Overview
Problem
Existing hair cleaning and cosmetic products, such as shampoos and dry shampoos, face challenges in convenience, control during application, and maintenance of product integrity, particularly in solid forms that require complex manufacturing processes and may damage hair or strip it of color.
Innovation Solution
A method involving blending a powder phase with absorbents like mica, silica, starch, talc, and zeolite with a solvent phase to create a dry shampoo tablet or other cosmetic products, using a porous mold with specific thermoplastic materials for easy application and control, eliminating the need for rinsing and preserving hair integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If liquid or gel shampoo is used for cleaning hair, then effective oil and dirt removal is achieved, but wetting and rinsing steps are required which reduce convenience
Solution Approach 1:
The invention changes the physical state of the shampoo from liquid/gel to solid tablet form. This parameter change eliminates the need for wetting and rinsing steps, as the solid tablet can be applied directly to dry hair and works without water activation, thereby improving convenience while reducing process complexity
Solution Approach 2:
The invention utilizes phase transition by transforming the shampoo formulation from liquid phase to solid phase through freeze-drying technology. The solid tablet contains encapsulated cleaning agents that activate upon contact with hair oils, providing liquid-free operation and eliminating rinsing requirements
2Reliability
If surfactants are included in liquid hair products for effective cleaning, then oil and dirt removal is improved, but hair damage and color stripping occur
Solution Approach 1:
The invention extracts and eliminates harsh surfactants from the formulation. Instead, it uses mild absorbent powders and natural cleaning agents embedded in the solid tablet, achieving effective oil removal without the harmful side effects of traditional surfactants on hair integrity and color
Solution Approach 2:
The solid tablet is designed as a single-use disposable unit containing pre-measured cleaning agents. Each tablet provides sufficient cleaning for one application and is then discarded, eliminating the need for rinsing and preventing residual surfactant buildup that could damage hair over time
3Ease of operation
If dry shampoo is provided in loose powder or aerosol form, then rinsing is eliminated, but efficient application to specific hair areas becomes difficult
Solution Approach 1:
The invention merges the cleaning agents, absorbents, and structural support into a single integrated solid tablet unit. This unified form factor provides both the convenience of rinse-free operation and precise application control, as the tablet can be easily held and applied to specific hair areas without the scattering issues of loose powder or the propellant requirements of aerosols
4Stability of the object's composition
If solid cosmetic products are manufactured using compression and temperature cycling, then product integrity is maintained, but manufacturing complexity and cost increase
Solution Approach 1:
The invention uses freeze-drying (lyophilization) phase transition process to create solid tablets. The formulation is frozen and then dried under vacuum, creating a porous solid structure that maintains integrity without requiring expensive compression presses or complex temperature cycling. This single-step phase transition process simplifies manufacturing while preserving product stability
Solution Approach 2:
The solid tablet employs a composite material structure combining absorbent powders, binding agents, and cleaning agents in a freeze-dried matrix. This composite formulation provides structural integrity and stability without requiring high-pressure compression, simplifying the manufacturing process while maintaining product coherence during use
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 convenient, easy-to-apply, and effective method for cleaning and deodorizing hair without rinsing, maintaining hair integrity and allowing for targeted application, while also simplifying the manufacturing process for solid cosmetic products.
Implementation Method 1
The mold can include a thermoplastic material with a pore size having a transverse dimension that ranges, for example, between about 7 micrometers and 150 micrometers
Implementation Method 2
blending a powder phase including at least two absorbents selected from the group of mica, silica, starch, talc, kaolin and zeolite
Data Source
AI summary
A method of providing a treatment for cleaning and removing oils from hair includes providing a cosmetic that includes a blend of a powder phase including at least two absorbents selected from the group of mica, silica, starch, talc, kaolin and zeolite, and at least one emollient with a solvent phase. The blended powder and solvent phases are formed into a dry shampoo product adapted for manual application to the hair. A porous mold may be used to provide the cosmetic. Techniques may be applied to other forms of cosmetic compositions.