Phenolic Compound Photoprotective Compositions for Hair
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Solution Overview
Problem
Conventional photoprotective compositions for keratinous substrates, such as hair and skin, are not water-resistant and fail to provide effective protection against UV and visible radiation, leading to damage and undesirable effects like color degradation, dryness, and brittleness.
Innovation Solution
A composition combining phenolic compounds, such as ortho-diphenols and phenolic compounds with carboxylic acid moieties, with polyamines and water-soluble metal salts, applied with a cosmetically acceptable carrier, which enhances photoprotection, conditioning, and durability of hair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional photoprotective compositions are applied to keratinous substrates, then some photoprotection is provided, but the compositions are easily removed by water and fail to provide continuous protection
Solution Approach 1:
The patent combines phenolic compounds with polyamines or water-soluble metal salts to create a composite photoprotective composition. This composite structure allows the formulation to maintain photoprotection efficacy while achieving water resistance through the synergistic interaction between components, preventing easy removal by water.
Solution Approach 2:
The invention modifies the chemical composition parameters by selecting specific phenolic compounds with particular structural characteristics and combining them with polyamines or metal salts in optimized ratios. This parameter optimization enables the composition to achieve both effective photoprotection and enhanced water resistance.
2Object-affected harmful factors
If sun exposure protection is provided to hair, then UV damage is reduced, but the composition must remain stable over time and resistant to water
Solution Approach 1:
The patent applies the photoprotective composition to hair before UV exposure, creating a protective layer in advance. The phenolic compounds and polyamines/metal salts form a stable complex that adheres to the hair surface, providing preliminary protection that persists through water exposure and maintains efficacy over extended periods.
Solution Approach 2:
The invention uses phenolic compounds that can be applied in each use cycle, providing fresh photoprotection while the composition's water-resistant properties ensure the protection lasts through water exposure without requiring long-term stability of a single application.
3Object-affected harmful factors
If photoprotective compositions are applied to keratinous substrates, then UV protection is achieved, but the compositions do not provide additional cosmetic benefits such as conditioning and hair strength
Solution Approach 1:
The patent designs the photoprotective composition to perform multiple functions simultaneously. The phenolic compounds provide UV absorption while the polyamines or metal salts contribute to hair conditioning, strength enhancement, and color retention. This multi-functional formulation delivers both photoprotection and cosmetic benefits in a single application.
Solution Approach 2:
The invention merges photoprotection functionality with cosmetic conditioning functionality by combining phenolic compounds with polyamines or metal salts. The resulting composition integrates UV filtering capabilities with hair care properties, allowing simultaneous achievement of protection and cosmetic improvement.
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 composition effectively protects keratinous substrates from UV damage, improves hair strength, retention of color, and overall appearance, while maintaining stability even when exposed to water.
Implementation Method 1
UV and visible radiations can damage keratinous substrates such as skin and hair
Implementation Method 2
Conventional photoprotective or sunscreen compositions tend to easily be removed from the body upon contact with water
Data Source
AI summary
A method of photoprotecting a keratinous substrate comprising applying a composition onto the keratinous substrate, the composition comprising at least one phenolic compound chosen environmental at least one ortho-diphenol, at least one phenolic compound having a carboxylic acid moiety, and mixtures thereof, —a compound chosen from at least one pelyarn!ne, at least one water solvable metal salt, and mixtures thereof; and a cosmetically acceptable carrier. The present disclosure also relates to photoprotective compositions for application onto hair and skin, the compositions comprising at least one phenolic compound chosen from at least one ortho-diphenol, at least one phenolic compound having a carboxylic acid moiety, and mixtures thereof; a compound chosen from at least one polyamine, at least one water soluble metal salt, and mixtures thereof; and a cosmetically acceptable carrier.