From Marine Waste to Skin Care: Development of a Sustainable Squid Ink Eumelanin-Based Natural UV-Protective Sunscreen Gel. Int. J. Res. Pharm. Sci. Technol. [Internet]. 2026 Aug. 8 [cited 2026 Sep. 28];9(3). Available from: https://rubatosisjournals.com/index.php/ijrpst/article/view/578