Ananda Saputra, Septian Maulid Wicahyo, and Siwi Hastuti. “Identification Formula For Hydroquinone Compound Content In Bulk Body Lotion Cosmetic Preparations Sold On E-Commerce”. International Journal of Health Engineering and Technology, vol. 4, no. 6, Mar. 2026, doi:10.55227/ijhet.v4i6.608.