J.K, Alangcao, Bergado, J, Carelo, J., Dela Villa, J.A, Guinto, A., Maldepena, G.R., and Quinanola, R. 2026. “Formulation of Eco-Crayons Using Organic Pigments and Natural Waxes (Soy Wax, Palm Wax, and Beeswax)”. International Journal of Progressive Research in Science and Engineering 7 (03):37-46. https://doi.org/10.65138/ijprse.2026.v7i03.1255.