Determination of Hyaluronic Acid Dermal Filler Impurities Using SEM/EDS Analysis

Although hyaluronic acid (HA) filler injections are associated with various non-vascular inflammatory complications, the underlying mode of action remains unclear. The hyaluronic acid filler may not be sufficiently pure, leading to an immune response. The present study attempted to identify any impu...

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Bibliographic Details
Published in:Polymers 2023-03, Vol.15 (7), p.1649
Main Authors: Lee, Won, Rho, Nark-Kyoung, Yang, Eun-Jung
Format: Article
Language:English
Subjects:
Air pollution
Aluminum isotopes
Analysis
Contaminants
Contamination
Dermal fillers
Fillers
Hyaluronic acid
Immune response
Impurities
Manufacturing
Pore size
Scanning electron microscopy
Scientific imaging
Skin care products
X-ray spectroscopy
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Summary:Although hyaluronic acid (HA) filler injections are associated with various non-vascular inflammatory complications, the underlying mode of action remains unclear. The hyaluronic acid filler may not be sufficiently pure, leading to an immune response. The present study attempted to identify any impurities in hyaluronic acid fillers available on the market. Particles were counted after degrading hyaluronic acid filler with hyaluronidase. Particulate matter was subsequently observed using scanning electron microscopy, and the particle components were evaluated using energy-dispersive X-ray spectroscopy. Different quantities of impurity particles (>10 and 25 μm) were detected microscopically. Silicon and aluminum isotopes were also detected. Hyaluronic acid fillers were contaminated with these particles. The degree of contamination varied substantially among the tested filler products. These contaminant particles may evoke reactions in the patient's body. Clinicians should be aware of this source of possible contamination and its effects.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym15071649