This work presents the study results of the phytochemical profile and antioxidant activity of aboveground organs of the East Kazakhstan population of Salicornia europaea L. The chemical composition of the plant sample was studied using a complex of modern analyt-ical methods, including HPLC, GC-MS, IR-Fourier spectroscopy, and elemental analysis. It was found that the content of flavonoids was 2.40 ± 0.02 mg QE/g of dry raw materials, and the content of polyphenols was 6.73 ± 0.03 mg GAE/g. The antioxidant activity (ABTS test) reached 7.85±0.04 mg TE/g. The concentration of fat-soluble and water-soluble vita-mins was: C - 1.27 ± 0.12 mg/100 g, A - 1.16 ± 0.11 mg/100 g and E - 3.89 ± 0.38 mg/100 g. The IR characterization of plant raw materials and ash was carried out, the indicators of the elemental composition (TC, TOC, TIC, TN, TS) were determined. The totality of the data obtained indicates the phytochemical potential of Salicornia europaea L., which grows in the territory of Eastern Kazakhstan, and substantiates the prospects of its use in the develop-ment of cosmetic and cosmeceutical products.