[1] Vgl. Garcia Bartels, Natalie, and Ulrike Blume-Petyavi. "Hautalterung: Klinik, Ursachen und Prävention." Hautalterung. Springer, Berlin, Heidelberg, 2008. 241-250.
[2] Vgl. Juncan, Anca Maria, et al. "Advantages of hyaluronic acid and its combination with other bioactive ingredients in cosmeceuticals." Molecules 26.15 (2021): 4429.
[3] Vgl. Trunzer, Julia. Gesund mit ätherischen Ölen: Naturdüfte für Körper und Geist. Kosmos, 2023. 40-43.
[4] Vgl. Thumm, A. (2021). Düfte des Waldes. Heilpflanzen, 01(01), 40–43. https://doi.org/10.1055/s-0041-1731878, abgerufen am 08.09.2023
[5] Vgl. Roggia, Isabel, et al. "Profiling and Evaluation of the Effect of Guarana-Loaded Liposomes on Different Skin Cell Lines: An In Vitro Study." Cosmetics 10.3 (2023): 79.
[6] Vgl. Enescu, Christina D., et al. "A review of topical vitamin C derivatives and their efficacy." Journal of Cosmetic Dermatology 21.6 (2022): 2349-2359.
[7] Vgl. Sanchez, Nelson, Rachel Fayne, and Brandon Burroway. "Charcoal: An ancient material with a new face." Clinics in Dermatology 38.2 (2020): 262-264.