RETNO, Eka Kumala et al. QUALITATIVE ANALYSIS OF MERCURY AND HYDROQUINONE CONTENT IN WHITENING CREAMS CIRCULATING IN BALIKPAPAN. INDONESIA NATURAL RESEARCH PHARMACEUTICAL JOURNAL, [S.l.], v. 7, n. 2, p. 91-96, dec. 2022. ISSN 2502-8421. Available at: <https://ojs3.binainsancerdas.com/index.php/INRPJ/article/view/6489>. Date accessed: 13 apr. 2026. doi: http://dx.doi.org/10.52447/inrpj.v7i2.6489.