Nail Varnish with Chestnut Extract for Brittle Nail Strengthening
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Solution Overview
Problem
Current nail polish formulations face challenges in strengthening brittle nails without using toxic or allergenic substances, and natural alternatives must be compatible with solvent environments without degrading varnish properties.
Innovation Solution
Incorporating rhamnogalacturonan and uronic acids from chestnut extract into nail polish compositions, which are stable across various concentrations and do not affect the shine, adhesion, hardness, or stability of the varnish, even in different solvent-based or aqueous formulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If formaldehyde or glyoxal is incorporated into nail polish to strengthen nails, then nail strength is improved, but toxicity and allergenicity increase
Solution Approach 1:
The patent extracts and removes the harmful formaldehyde and glyoxal components from nail polish formulations while retaining the desired nail-strengthening function through alternative ingredients, thereby eliminating toxicity and allergenicity
Solution Approach 2:
The patent replaces long-standing but harmful traditional ingredients with safer, naturally-derived alternatives that achieve the same functional effect without the harmful side effects
2Strength
If citral is used as a hardener in nail polish, then nail hardness is improved, but allergenicity increases
Solution Approach 1:
The patent removes citral from the formulation and replaces it with naturally-derived hardening agents that do not provoke allergic reactions, maintaining nail hardness improvement while eliminating allergenicity
Solution Approach 2:
The patent changes the chemical composition parameters by substituting synthetic or allergenic hardening agents with naturally-derived alternatives that have similar hardening effects but different safety profiles
3Strength
If alpha-hydroxy acids are incorporated into nail polish to strengthen nails, then nail strength is improved, but skin irritation increases and stability decreases
Solution Approach 1:
The patent removes alpha-hydroxy acids from the formulation and replaces them with naturally-derived strengthening agents that do not cause skin irritation and are more stable in the polish matrix
Solution Approach 2:
The patent uses composite natural extracts containing multiple active components that work synergistically to strengthen nails without the irritating side effects of alpha-hydroxy acids
4Object-affected harmful factors
If natural substances are used in nail polish to avoid toxicity, then safety is improved, but compatibility with solvent environments and varnish qualities may deteriorate
Solution Approach 1:
The patent optimizes the concentration parameters of natural extracts and adjusts the formulation parameters to ensure compatibility with both organic and aqueous solvent systems, maintaining varnish stability while preserving safety benefits
Solution Approach 2:
The patent develops a universal natural extract formulation that is compatible with multiple types of nail polish bases (both solvent-based and water-based), maintaining stability and performance across different varnish compositions
Data Source
AI summary
The invention relates to a cosmetic nail care composition in the form of a varnish, which is to be applied to the surface of the nail, characterized in that it contains an aqueous chestnut extract Castanea sativa. The invention also relates to the use of said cosmetic composition for improving the surface condition of the nail, in particular for nourishing and hydrating the nail.