Farida Kumalasari, Rahmat Hidayat and Tiara Ajeng Listiyani 2026. Evaluation Of Sun Protection Factor Value Of Water, Ethyl Acetate, And N-Hexane Fractions Of Ethanolic Extract Of Crystal Guava Fruit (Psidium Guajava. L.) By UV-VIS Spectrophotometry. International Journal of Health Engineering and Technology. 4, 6 (Mar. 2026). DOI:https://doi.org/10.55227/ijhet.v4i6.661.