Topical Composition D-Panthenol BEMT Textile Staining
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Solution Overview
Problem
Sun care products containing UVA filters like BEMT cause textile staining, leading to consumer protection reduction as users avoid applying sufficient sunscreen to prevent staining.
Innovation Solution
Incorporating D-panthenol into sun care compositions with BEMT and polysilicone-15, with a weight ratio of D-panthenol to BEMT of at least 1.25, to enhance the washability and reduce textile staining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UVA filters like BEMT are used in sun care products, then UVA protection is improved, but textile staining increases
Solution Approach 1:
The patent introduces polysilicone-15 as an intermediary substance that complexes with BEMT to form a composite filter system. This intermediary prevents BEMT from directly staining textiles while maintaining its UVA filtering capability, effectively mediating between the protective function and the staining problem
Solution Approach 2:
The patent creates a composite UV filter system combining BEMT with polysilicone-15 in specific ratios (0.5:1 to 2:1 weight ratio). This composite material maintains the UVA protection benefits of BEMT while the polysilicone component prevents textile staining, resolving the contradiction through material composition
2Object-generated harmful factors
If consumers use less sunscreen to prevent staining, then textile staining is reduced, but UV protection effectiveness decreases
Solution Approach 1:
Polysilicone-15 acts as a mediator that allows full sunscreen application without staining consequences. It enables the consumer to apply sufficient sunscreen for protection while the polysilicone prevents the harmful staining effect, resolving the dilemma between protection adequacy and staining avoidance
3Ease of operation
If D-panthenol is added to sun care compositions, then textile washability is improved, but formulation complexity increases
Solution Approach 1:
D-panthenol serves multiple functions in the formulation: it acts as a skin conditioning agent, moisturizer, and simultaneously improves textile washability. This multi-functionality justifies the additional ingredient by providing both cosmetic benefits and solving the staining problem without proportionally increasing complexity
Data Source
AI summary
The present invention relates to topical compositions comprising bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT), polysilicone-15 and D-panthenol in specific ratios which exhibit a reduced textile staining.