Nikita Puspa, Rahmat Hidayat and Alfina Nurrahman 2026. The Effect Of Variations In Carbopol Concentration On The Physical Characteristics And SPF Value Of Sunscreen Spray Gel With Ethanol Extract Of Kepok Banana Flowers (Musa Acuminata X M. Balbisiana) By UV-Vis Spectrophotometry. International Journal of Health Engineering and Technology. 4, 6 (Mar. 2026). DOI:https://doi.org/10.55227/ijhet.v4i6.637.