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Patients typically notice a significant reduction in deep wrinkles and a visible improvement in facial volume immediately after the injection. Clinical studies show that results from Juvederm Ultra 4 last up to 12 months, depending on the area treated and individual lifestyle factors. The gel maintains its volume and elasticity over time, giving patients a youthful, refreshed appearance. Maintenance treatments are recommended after 9–12 months to sustain results. The low water content and smooth gel ensure that the product integrates well with the tissue and provides a natural feel.