The present study focused on the formulation and evaluation of novel herbal sunscreen formulations using plant-based oils such as Red Raspberry Seed Oil, Carrot Seed Oil, and Avocado Oil. The developed formulations were evaluated for Sun Protection Factor (SPF), UVA protection, antioxidant activity, physicochemical properties, stability, and skin irritation potential. Three different formulations were prepared and evaluated using standard laboratory methods. The formulations exhibited skin-compatible pH values ranging from 5.0 to 5.5 and viscosity between 2500–3000 cP, indicating suitability for topical application. Among the developed formulations, Formulation B showed the highest photoprotective activity with an SPF value of 24 and a UVA protection factor of 0.35. Antioxidant activity assessed by the DPPH assay showed maximum radical scavenging activity of 77% at 100 µg/mL for Formulation B. Stability studies conducted under accelerated conditions (40°C and 75% RH) for six months revealed no significant changes in pH, viscosity, or phase separation. Patch testing indicated minimal skin irritation, confirming the safety of the formulations. These findings demonstrate that plant-derived oils possess significant photoprotective and antioxidant properties and can be effectively incorporated into herbal sunscreen formulations. Such formulations may serve as safe, eco-friendly alternatives to conventional chemical sunscreens.
Bondili Sadhana (Wed,) studied this question.