Restylane is an injectable gel made of hyaluronic acid, a substance naturally found in the body that attracts and binds water molecules to add volume. When injected into the face, results are instant, adding volume to restore skin contours for a more youthful appearance.

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* When using the Restylane Treatment Plan for the treatment of nasolabial folds with Restylane injectable gel, at least 94% of patients who completed a long term clinical study maintained results from 18–36 months from initial treatment when they had a follow-up treatment at 4.5 months of 9 months and 18 months. (75 patients enrolled in the study—63 were evaluated at month 18; 52 were evaluated at month 24; and 27 were evaluated at month 36). The maintenance of results using Restylane-L, Restylane Fine Lines, Restylane Fine Lines-L, Restylane Perlane, and Restylane Perlane-L injectable gels has not been studied.