Facial Depilatory Article With Return Portions
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Solution Overview
Problem
Existing depilatory compositions, especially in substrate-based forms, face challenges in selectively applying depilatory agents to the area around the mouth without irritating the vermilion lip, leading to incomplete hair removal and user dissatisfaction.
Innovation Solution
A depilatory article with a substrate-based design featuring a coated region that includes an upper-lip portion and return portions adapted to project contiguously with the outer extremity of the vermilion lip, allowing for targeted hair removal around the mouth while minimizing contact with the lip, combined with a water-impermeable substrate to maintain depilatory composition efficacy and prevent skin irritation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If depilatory composition is applied to the area around the mouth using traditional creams or lotions, then hair removal can be achieved, but the composition may irritate the vermilion lip and the application process is messy and awkward
Solution Approach 1:
A substrate acts as an intermediary carrier between the depilatory composition and the skin. The substrate is designed with specific geometric features (protrusions and recesses) that control where the composition is delivered, preventing contact with the vermilion lip while ensuring coverage of the surrounding skin area. This mediator approach resolves the contradiction by enabling precise spatial control of composition application.
Solution Approach 2:
The substrate is designed with non-uniform geometry featuring protrusions that extend beyond the substrate edges and recesses that receive the depilatory composition. This creates local variations in composition delivery - concentrated composition at the protrusion tips for hair removal, and no composition at the recess areas to prevent lip irritation. This local quality differentiation resolves the contradiction between effective hair removal and avoiding lip irritation.
2Object-affected harmful factors
If multiple pieces of substrate are provided to fit around the mouth, then selective application to desired areas is achieved, but the application procedure becomes messy and complicated
Solution Approach 1:
Multiple functional zones (protrusions and recesses) are merged into a single integrated substrate piece. The substrate includes multiple protrusions distributed across its surface, each capable of delivering composition to different areas around the mouth. This merging of multiple application zones into one unified component achieves selective application precision while avoiding the complexity of handling and applying multiple separate pieces.
3Productivity
If a complete mask is provided for facial depilation, then comprehensive hair removal is achieved, but alignment difficulty causes composition to smear across the face resulting in uneven application
Solution Approach 1:
The substrate is segmented into distinct functional zones with protrusions and recesses that are pre-configured to align with specific facial features. Each protrusion corresponds to a specific hair removal zone around the mouth, while the recesses prevent composition migration. This segmentation approach enables comprehensive coverage while maintaining application precision through the pre-defined geometric relationships between segments.
Solution Approach 2:
The substrate geometry is pre-designed with protrusions and recesses in specific positions and orientations that correspond to the target areas around the mouth. This preliminary configuration of the substrate structure ensures proper alignment and prevents composition smearing before application begins, eliminating the need for complex alignment procedures 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
Enables effective hair removal around the mouth without irritating the vermilion lip, ensuring complete hair depilation while maintaining the integrity and effectiveness of the depilatory composition.
Implementation Method 1
Such compositions may comprise reducing agents to degrade keratin in the hair and thus weaken the hair strands
Implementation Method 2
a water-impermeable substrate to maintain depilatory composition efficacy and prevent skin irritation
Data Source
Figure 1~2
Figure 3
AI summary
A depilatory article, preferably a facial depilatory article, comprising a substrate which is at least partially coated with a depilatory composition, preferably a depilatory composition, the coating of depilatory composition forming a coated region of the depilatory article, wherein the coated region comprises an upper-lip portion adapted to be placed above a human mouth, and wherein the coated region comprises a first return portion projecting from the upper lip portion and adapted to be placed contiguously with the outer extremity of the vermilion lip in a first corner of the mouth.