Biodegradable Abrasive for Skin Cleansers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current skin cleansers face challenges in achieving a balance between effective cleaning performance and skin compatibility while being biodegradable, sustainable, and environmentally friendly, as existing abrasives often have poor biodegradability, skin tolerance issues, and environmental concerns due to their non-renewable sources and potential allergens.
Innovation Solution
A skin cleanser formulation containing 2-25% abrasives with an average grain size of 100-1000 µm, comprising at least 50% cellulose esters and plasticizers, 5-45% polyhydroxyalkanoate copolymers, 2-30% surfactants, 0.1-10% thickener, and water, which are biodegradable and derived from renewable sources, along with optional additives for improved stability and skin compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plastic-based abrasives (polyethylene or polyurethane) are used, then cleaning performance and skin tolerance are improved, but biodegradability deteriorates
Solution Approach 1:
The patent uses composite materials by combining natural flour particles (cellulose-based) with binding agents to create abrasives that maintain the cleaning performance of synthetic materials while being biodegradable. The natural flour provides the abrasive function and biodegradability, while the binding agent ensures structural integrity
Solution Approach 2:
The patent modifies the properties of natural flour through controlled particle size reduction (grinding to specific grain sizes) and chemical treatment (bleaching, disinfection) to enhance its abrasive performance and stability in cosmetic formulations, transforming it from a non-optimal natural material into an effective biodegradable abrasive
2Loss of substance
If natural flours (shell and core flours) are used, then sustainability is improved, but cleaning performance and stability deteriorate
Solution Approach 1:
The patent applies parameter changes by controlling the particle size distribution of natural flours through precise grinding processes and by treating the flours with bleaching agents and disinfectants to modify their surface properties, thereby enhancing cleaning performance and formulation stability while maintaining sustainability
Solution Approach 2:
The patent creates composite structures by combining natural flour particles with binding agents and other cosmetic ingredients, forming a composite abrasive system that leverages the sustainability of natural materials while achieving the cleaning performance and stability required for cosmetic applications
3Reliability
If mineral abrasives (quartz sand or pumice flour) are used, then cleaning performance is improved, but skin tolerance and environmental impact deteriorate
Solution Approach 1:
The patent replaces harsh mineral abrasives with composite abrasives made from natural flours (such as almond, oat, or rice flour) combined with binding agents. These natural flour-based abrasives provide effective cleaning through their controlled particle morphology while being gentler on the skin and environmentally friendly
Solution Approach 2:
The patent modifies the physical parameters of natural flour particles through controlled grinding to achieve optimal grain size distributions that provide sufficient abrasive action for cleaning while having rounded, softer edges that improve skin tolerance compared to sharp-edged mineral particles
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 skin cleanser with enhanced cleaning performance, improved skin tolerance, and high biodegradability, comparable to polyethylene or polyurethane-based products, while being environmentally sustainable and reducing sedimentation in wastewater.
Implementation Method 1
Skin cleaning agents can contain abrasives to improve the cleaning performance, which mechanically support the cleaning effect of surfactant-like components
Implementation Method 2
The abrasives used according to the invention contain at least 50% by weight of a combination of cellulose esters and plasticizers
Implementation Method 3
5% by weight to 45% by weight of one or more copolymers from the group of the polyhydroxyalkanoate
Implementation Method 4
b) 2 up to 30% by weight of surfactants
Implementation Method 5
c) 0.1 to 10% by weight of thickener
Data Source
AI summary
Skin cleansing agent containing a) 2 to 25 wt.% abrasive with a mean particle size of 100 to 1,000 µm containing - at least 50 wt.% of a combination of cellulose ester and plasticizer - 5 to 45 wt.% of a copolymer from the group of polyhydroxyalkanoates b) 2 to 30 wt.% surfactants, c) 0.1 to 10 wt.% thickener, d) water, and optionally other excipients.