Next-Generation Natural Sunscreen: A Six-Phase Homogenization Approach with Encapsulated Filters for Enhanced Photoprotection and Thermal Stability

As concerns escalate regarding the dermatological safety and ecological impact of conventional sunscreens especially under intense UV radiation and high humidity in tropical regions like Malaysia there is a critical need for advanced, natural photoprotective solutions that deliver reliable efficacy without compromising environmental responsibility. This study presents a next-generation herbal–mineral sunscreen formulation employing a sophisticated six-phase homogenization process to achieve precise multi-phase microstructuring, which enhances stability, uniform dispersion, and sensorial performance of the active components. The formulation integrates bioactive botanical extracts, including α-Bisabolol and Roman Chamomile, with micronized Titanium Dioxide mineral filters to deliver broad-spectrum UV defence and excellent dermal compatibility. The formulation’s performance and resilience were rigorously validated through multiple assessment protocols: SPF Testing to quantify sun protection efficacy; a proprietary ThermoShield Assay designed to simulate intense heat exposure and demonstrate enhanced thermal barrier properties; and UV Transmittance Card Evaluation to visually confirm UV blocking performance. Results demonstrated consistent photoprotection, rapid absorption, a non-greasy texture, and a transparent finish without white cast effectively overcoming key limitations of conventional formulations. By combining high-performance sun protection, potent botanical bioactivity, and an eco-conscious profile through a controlled multi-phase production approach, this innovation sets a new benchmark in natural photoprotection and addresses the unmet need for safe, multifunctional sun care tailored to demanding climatic environments.