It's hard to predict how long your cosmetic surgery's effect will last because it depends on so many variables. First, it depends on what type of surgery you have. If you have surgery to change basic facial features, such as nose reshaping (rhinoplasty), chin or cheek implants, the effects are permanent because the changes are structural. If you have surgery to decrease the effects of aging, such as a facelift or eyelid surgery, the surgical results' longevity will depend on factors such as genetics, sun exposure, weight gain or loss, and whether or not you smoked in the past or present. Patients will always look younger, surgery in essence “turns back the clock”. However, you will continue to age, but the changes we make with surgery have a lasting effect. If you have a facelift, you can expect the results to last for seven to ten years. If you undergo a blepharoplasty (eyelid surgery), you can expect the effects to last for eight to ten years, in most instances.