Comparison of 2.5% agarose gel vs hyaluronic acid filler, for the correction of moderate to severe nasolabial folds

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Abstract

Background: Agarose gel filler is a natural hydrocolloid with a three-dimensional structure similar to the extracellular matrix, with gel formed by hydrogen bonds and electrostatic interactions rather than through chemical cross-linking or polymerization. Objective: To determine efficacy and safety of 2.5% agarose gel filler for the correction of nasolabial folds. Methods: In this split-face study, efficacy, safety, and usability of 2.5% agarose gel were compared to those of NASHA-L. Assessments included the nasolabial fold (NLF) Wrinkle Severity Rating Scale (WSRS), Global Aesthetic Improvement Scale (GAIS [blinded investigator]), subject satisfaction, safety (adverse events), and usability. Results: Sixty-six subjects were treated, and 46/66 (66.7%) were available for evaluation at 3 months, when mean change in WSRS was identical for both products (−1.1 ± 0.4 for 2.5% agarose; −1.1 ± 0.4 for NASHA-L). Scores for each product remained similar across all time points and began to return to baseline between 7 and 8 months. GAIS score followed a similar pattern, rising between months 7 and 8 (2.7 ± 0.6 for 2.5% agarose at month 7-3.3 ± 0.5 at month 8 and 2.7 ± 0.6 for NASHA-L at month 7-3.3 ± 0.5 at month 8). Ultrasound confirmed the longevity of both fillers between 7 and 8 months. All adverse events were transient in nature and resolved within 15 days. Most events were mild in nature, and the number of events was similar between the two fillers. Conclusion: Treatment with 2.5% agarose gel resulted in improvement that persisted for between 7 and 8 months. The treatment effect was equivalent to NASHA-L.

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APA

Scuderi, N., Fanelli, B., Fino, P., & Kinney, B. M. (2021). Comparison of 2.5% agarose gel vs hyaluronic acid filler, for the correction of moderate to severe nasolabial folds. Journal of Cosmetic Dermatology, 20(5), 1512–1519. https://doi.org/10.1111/jocd.13962

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