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Clinical studies and practitioner experience suggest Restylane Eyelight Lidocaine provides effective tear trough correction for 6–9 months, with variability depending on patient age, metabolism, and injection technique. Its NASHA™ cross-linked structure ensures slow, predictable degradation. While it lacks the extreme longevity of deep volumisers like Restylane Volyme or Lyft in other areas, Eyelight is optimised for the fragile infraorbital zone where overcorrection must be avoided. In practice, most patients achieve noticeable hollowing reduction with a single 0.5 mL session, sometimes followed by a small touch-up at 6 months. Patient satisfaction rates remain high, with minimal swelling, bruising and lump formation compared to older HA formulas. Maintenance typically involves annual or semiannual retreatment, which aligns with the natural aging process while preserving a smooth, rested appearance.