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September 5, 2026World Journal of Pharmaceutical ResearchOpen Access

Formulation and Evaluation of Herbal Sunscreen Cream Containing Guava Leaf Extract

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Authors

AVArnold Allan A.*, Dhanush E., Harish S., Priyanka S., Yogeshwaran S., Senthil Kumar Krishnan, Kannabirran Vaikundam

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Overview

Experimental formulation study reveals effective UV protection and physical stability for a guava leaf extract cream, highlighting its viability as a natural sunscreen adjuvant.

Key Points

  • To formulate and evaluate a stable, non-irritant herbal sunscreen cream utilizing guava (Psidium guajava) leaf extract combined with zinc oxide for enhanced photoprotection.
  • Formulated five sunscreen cream batches (F1–F5) by varying the concentration of guava leaf extract from 2 to 10 mL per 100 g cream alongside zinc oxide, while keeping other excipients constant.
  • Assessed all formulations for physical properties (appearance, pH, spreadability, viscosity, phase separation), skin irritation, physical stability, and in-vitro sun protection factor (SPF).
  • All formulations demonstrated uniform homogeneity, good skin compatibility, no phase separation, and a complete absence of skin irritation.
  • In-vitro SPF values increased progressively with higher extract concentrations, with formulation F4 (8 mL extract per 100 g cream) providing an optimal SPF of approximately 17, a skin-compatible pH of 6.2, and superior physical stability.

Cite This Study

Arnold Allan A.*, Dhanush E., Harish S., Priyanka S., Yogeshwaran S., Senthil Kumar Krishnan, Kannabirran Vaikundam (2026) studied this question.

synapsesocial.com/papers/6a9bd4346b95aff0620eba49https://doi.org/10.5281/zenodo.22267181
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