Exploring the Properties of Micronized Natural Zeolitic Volcanic Tuff as Cosmetic Ingredient

Abstract

This study explores the characteristics of a micronized natural zeolitic volcanic tuff (MZ) as ingredient in cosmetic formulations. In particular, the purpose was to prepare and investigate the organoleptic and physicochemical properties of two representative cosmetic formulations containing MZ. The MZ samples were characterized using X-ray fluorescence (XRF), X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. pH, cation exchange capacity (CEC), apparent density, chemical composition and particle size distribution of MZ samples were also determined. The micronization treatment applied did not produce significant structural and physicochemical changes with respect to the raw zeolitic volcanic tuff. The prepared formulations containing 5% MZ with different particle sizes (100–125 µm and 125–250 µm) were subjected to preliminary and accelerated stability tests, and the pH and organoleptic properties were also evaluated. The cosmetic formulations presented a pH of 4.3, a pleasant touch, good spreadability, easy application on skin, no color alteration and a good stability after 15, 30 and 60 days of storage at room temperature, low temperature and freezer during the accelerated stability tests. The obtained results endorse the MZ as suitable for the development of formulations exploiting the clinoptilolite properties as a cosmetic ingredient.

Activated natural zeolites for beer filtration: A pilot scale approach

“…The concentrations of As, Cd and Co were below LOQs, while the concentrations of other elements in NZ100 and NZ40 samples were 3.43 and 3.09 mg kg −1 Cr, 9.47 and 9.23 mg kg −1 Cu, 3.31 and 3.45 mg kg −1 Ni, 7.11 and 6.36 mg kg −1 Pb, and 20.4 and 22.9 mg kg −1 Zn ( Table 3 ). Metal concentrations in the same order of magnitude were reported for Romanian natural zeolites from Racosu de Jos deposit (7.31–8.70 mg kg −1 Cr, 1.65–2.03 mg kg −1 Cu, 3.21–4.35 mg kg −1 Ni, 4.69–6.78 mg kg −1 Pb, 4.08 and 4.41 mg kg −1 Zn, and <1 mg kg −1 Cd [ 42 ] and different deposits (<1–11.1 mg kg −1 Cr, 7.9–27.9 mg kg −1 Cu, 2.1 and 10.7 mg kg −1 Ni, <1–28.5 mg kg −1 Pb, and 14 and 64.1 mg kg −1 Zn [ 43 ]. However, Tomasevic-Canovic [ 44 ] reported 29–38 mg kg −1 Pb, 240–305 mg kg −1 Mn, 40–305 mg kg −1 Zn for natural zeolites from Serbia and Montenegro and highlighted the necessity of testing heavy metals bioavailability in zeolites when used for human.…”

Antibacterial Activity and Cell Responses of Vancomycin-Loaded Alginate Coating on ZSM-5 Scaffold for Bone Tissue Engineering Applications

“…In addition, after alginate coating, calcium deposition increased in both 7 and 14 days. Similarly, various studies [68][69][70][71][72][73][74][75][76][77][78][79][80] reported that alginate coating increased calcium deposition and new bone formation. For example, Jang et al [69] demonstrated the great calcium deposition results on the PCL scaffold with alginate coating.…”