This thesis explores the formulation of a novel colloidal astringent solution utilizing the synergistic properties of green tea and neem oil in skincare applications. Astringents play a crucial role in skincare, offering benefits such as pore tightening, oil control, and skin texture refinement. Green tea and neem oil, renowned for their antioxidant, anti-inflammatory, and antimicrobial properties, present promising ingredients for enhancing skin health. The study begins with a comprehensive literature review, examining previous research on astringents, green tea, and neem oil. This review elucidates the individual properties and skincare benefits of these ingredients, providing a foundation for their integration into a colloidal solution. Relevant formulation techniques for colloidal solutions and astringents are also reviewed, informing the experimental approach. Experimental design focuses on formulating a colloidal astringent solution using green tea extract and neem oil, with the aim of harnessing their collective potency. Physicochemical properties of the solution, including pH, viscosity, particle size, and stability, are characterized to evaluate its suitability for skincare applications. Stability studies over time provide insights into the shelf-life and efficacy of the formulation. Results demonstrate the successful formulation of a colloidal astringent solution with optimized properties, showcasing the potential synergy between green tea and neem oil. Analysis of experimental findings highlights the formulation's efficacy in addressing common skincare concerns, such as pore refinement, oil control, and inflammation reduction. The study contributes to the growing body of knowledge in natural skincare formulations, offering insights into the development of innovative products that marry tradition with modern science. In conclusion, the formulation of a colloidal astringent solution using green tea and neem oil represents a promising approach to skincare, leveraging the therapeutic benefits of natural ingredients. Future research may explore clinical applications and further optimization of the formulation to maximize its efficacy and safety in diverse skincare routines.
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