OBT-HAECL versus HYL-HAJU for the treatment of moderate-to-severe nasolabial folds: A phase III, randomized, evaluator-blinded study

Purpose: The new hyaluronic acid (HAOBT) range of products consists of five hyaluronic acid (HA) dermal fillers formulated through a unique process called Optimal Balance Technology (OBT). HAOBT products have a concentration of 20 mg/mL. Their distinctive physical properties are obtained by varying the cross-linking degree and particle size. This study was conducted to compare the efficacy and safety of one of the new small particle size HAOBT products (OBT-HAECL) to a comparable marketed hyaluronic acid gel based on the HylacrossTM technology (HYL-HAJU).

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