HLB-Controlled Cleansing Composition for Recessed Makeup Removal
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Solution Overview
Problem
Conventional oil-based makeup removers struggle to completely remove long-lasting makeup from recessed areas on the face without physical rubbing, leading to user anxiety and incomplete cleansing.
Innovation Solution
A cleansing composition comprising a nonionic surfactant with a specific HLB value, a low-viscosity oil phase, and an aqueous component, which penetrates and disperses makeup from recesses without rubbing, using a mist-type dispenser for easy application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional oil-based makeup removers are used, then cleansing power is strong, but makeup in recessed areas cannot be completely removed without rubbing
Solution Approach 1:
The invention changes the chemical parameters of the surfactant system by specifying a nonionic surfactant with HLB value of 3.0 or more, and controls the oil phase viscosity to 50 mPa·s or less at 25°C. These parameter changes enable the composition to effectively remove makeup from recessed areas without requiring mechanical rubbing action, thus resolving the contradiction between cleansing completeness and operation simplicity.
Solution Approach 2:
The invention creates a composite cleansing system combining specific nonionic surfactants with controlled viscosity oil phases. This composite material approach synergistically enhances the ability to penetrate and remove makeup from pores and recesses while maintaining easy spreadability, eliminating the need for rubbing and achieving both complete cleansing and operational ease.
2Reliability
If physical rubbing is applied to remove makeup from recesses, then makeup removal is improved, but skin friction and potential damage increase
Solution Approach 1:
The invention replaces the mechanical rubbing system with a chemical action system. By formulating with nonionic surfactants of specific HLB values and low-viscosity oil phases, the composition achieves makeup removal through chemical penetration and emulsification rather than mechanical friction, thus eliminating skin damage while maintaining effective cleansing.
Solution Approach 2:
The invention changes the rheological parameters of the oil phase by controlling viscosity to 50 mPa·s or less, enabling the composition to flow into and penetrate recessed areas without requiring external mechanical force. This parameter control allows the formulation to work passively through capillary action and surface tension, removing makeup gently without friction-induced skin damage.
3Reliability
If oil phase viscosity is increased for better makeup solubility, then cleansing power improves, but ease of spreading and penetration into recesses decreases
Solution Approach 1:
The invention optimizes the viscosity parameter of the oil phase to 50 mPa·s or less at 25°C, achieving a balance between makeup solubility and spreading ease. This controlled viscosity ensures the composition remains fluid enough to penetrate pores and recessed areas while maintaining sufficient oil content to effectively dissolve and remove makeup, resolving the contradiction between solubility and applicability.
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
Effectively removes makeup from small recesses like pores by spreading and rinsing off without physical force, ensuring complete makeup removal and reducing user stress.
Implementation Method 1
a surfactant which emulsifies the oil agent for rinsing
Implementation Method 2
removes makeup from fine recesses such as pores
Data Source
Figure 1
AI summary
A cleansing composition containing the following components (A), (B), and (C): (A) 7 to 35 mass% of a nonionic surfactant containing (a1) a multi-chain type nonionic surfactant which has two or more of at least one selected from the group consisting of an unsaturated chain hydrocarbon group and a saturated branched chain hydrocarbon group, and having an HLB value (a mixed HLB value when two or more nonionic surfactants are contained) of from 9.5 to 12.5; (B) 60 to 90 mass% of an oil phase having a viscosity at 25°C of 11 mPa·s or less; and (C) 0.05 to 8 mass% of one or more selected from the group consisting of water, an alcohol having 2 or 3 carbon atoms, and a dihydric alcohol.