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Teosyal RHA Deep Lines (also marketed as Teosyal RHA 3) is an injectable dermal filler composed of cross-linked hyaluronic acid and lidocaine, developed to treat deep dynamic wrinkles and folds such as nasolabial folds, deep lines, and facial creases[1][2][4][6][7]. The product utilizes Resilient Hyaluronic Acid (RHA) technology, designed to mimic natural hyaluronic acid to adapt flexibly to facial movements, preserving skin vitality, softness, and natural expressions while providing volume and support. Lidocaine is included to increase injection comfort. Effects typically last between 9 and 18 months depending on patient and site[1][2].
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