From Marine Waste to Skin Care: Development of a Sustainable Squid Ink Eumelanin-Based Natural UV-Protective Sunscreen Gel. International Journal of Research in Pharmaceutical Sciences and Technology, [S. l.], v. 9, n. 3, 2026. DOI: 10.33974/xxfdtp63. Disponível em: http://rubatosisjournals.com/index.php/ijrpst/article/view/578. Acesso em: 10 aug. 2026.