Y. A. Najih, Y. . Nailufa, D. N. . Rakhma, D. E. W. . Azhanzi, and F. Z. N. . Syah, “Sunscreen Lotion Formulation Optimization, Physical Stability, and Irritation Testing Combining Benzophenone-4 with Octocrylene ”, PHARMADEMICA, vol. 5, no. 2, pp. 181–194, Mar. 2026.