Sunscreen Agar Microgel Water-Soluble UV Absorbent
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Solution Overview
Problem
Existing sunscreen cosmetics face challenges in achieving high SPF values using only water-soluble ultraviolet absorbents, as they often fail to provide sufficient ultraviolet protection, and incorporating oil-soluble absorbents compromise the freshing texture.
Innovation Solution
A sunscreen cosmetic formulation utilizing 10-90 wt% agar microgel with 0.4-1 wt% agar content and 0.1-5 wt% water-soluble ultraviolet absorbents like phenylbenzimidazole sulfonic acid, without significant oil-soluble ultraviolet absorbents, enhancing ultraviolet absorption through agar microgel augmentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If oil-soluble ultraviolet absorbents are blended into sunscreen cosmetics to achieve high SPF values, then ultraviolet protection is improved, but the tactile sensation becomes oily and freshing texture is lost
Solution Approach 1:
The patent changes the solubility parameter of the ultraviolet absorbent from oil-soluble to water-soluble, specifically using phenylbenzimidazole sulfonic acid. This parameter change allows the absorbent to be dissolved in the water phase of the cosmetic formulation, eliminating the oily tactile sensation while maintaining effective ultraviolet protection through adequate concentration (0.1-5 wt%)
Solution Approach 2:
The patent introduces an intermediary substance, agar microgel, that facilitates the dispersion and effectiveness of water-soluble ultraviolet absorbents in the cosmetic formulation. The agar microgel acts as a carrier and stabilizer, enabling the water-soluble absorbent to function effectively without requiring oil-soluble components, thus maintaining freshing texture while achieving high SPF values
2Ease of operation
If water-soluble ultraviolet absorbents are used to maintain freshing texture, then tactile sensation is improved, but sufficient ultraviolet protection is not achieved
Solution Approach 1:
The patent creates a composite system combining water-soluble ultraviolet absorbent (phenylbenzimidazole sulfonic acid) with agar microgel particles. This composite material approach allows the water-soluble absorbent to achieve adequate ultraviolet protection when synergistically combined with the agar microgel, which enhances its absorption effectiveness while maintaining the freshing texture benefit
Solution Approach 2:
The patent optimizes the concentration parameter of the water-soluble ultraviolet absorbent to 0.1-5 wt% and combines it with agar microgel at 10-90 wt%. This parameter optimization ensures that the water-soluble absorbent achieves sufficient ultraviolet protection levels without compromising the freshing texture, overcoming the limitation of using water-soluble absorbents alone
3Reliability
If agar microgel is added to enhance ultraviolet absorption of water-soluble absorbents, then ultraviolet protection is improved, but formulation complexity increases
Solution Approach 1:
The patent selects agar microgel as a multi-functional ingredient that simultaneously serves as a thickening agent, a carrier for water-soluble ultraviolet absorbents, and a stabilizer in the cosmetic formulation. This multi-functionality reduces the need for additional separate components, thereby enhancing ultraviolet absorption while minimizing the increase in formulation complexity
Solution Approach 2:
The patent merges the functions of thickening, UV absorbent delivery, and stabilization into a single component system where agar microgel performs multiple roles. By combining these functions into one element rather than using separate ingredients for each function, the patent enhances ultraviolet protection without proportionally increasing formulation complexity
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 agar microgel significantly increases the ultraviolet absorption effect of water-soluble absorbents, allowing for high SPF values without oil-soluble components, maintaining a freshing texture and offering flexibility in formulation forms, including aqueous solutions.
Implementation Method 1
the agar microgel significantly increases the ultraviolet absorption effect of water-soluble absorbents
Implementation Method 2
achieves a high SPF value and achieves a freshing texture upon use by effectively adding a water soluble ultraviolet absorbent
Data Source
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Figure 3~4
AI summary
The present invention provides a sunscreen cosmetic comprising, relative to the total amount of the sunscreen cosmetic, 10-90 wt% of agar microgel (wherein the agar content in the agar microgel is 0.4-1 wt%) and 0.1-5 wt% of a water soluble ultraviolet absorbent. It was necessary to blend in an organic ultraviolet absorbent and such to give sunscreen cosmetics a high SPF value. However, there was a problem in that it was hard for a water soluble ultraviolet absorbent in the formulation to achieve the expected SPF function. Also, sunscreen cosmetics are particularly desired to give a freshing texture upon use. In view of the fact that a high blend ratio of an oil soluble ultraviolet absorbent inhibits the freshing texture upon use, the object of the present invention is to provide a sunscreen cosmetic that achieves a high SPF value and a freshing texture upon use by mainly blending in a water soluble ultraviolet absorbent.