Restylane Lyft is a dermal filler made from hyaluronic acid (HA), a naturally occurring substance in the body. HA fillers like Restylane Lyft are designed to be biodegradable, meaning they will break down over time within the body. However, the breakdown of the filler is not primarily caused by sun exposure.Sun exposure can have various effects on the skin, including causing damage due to UV radiation. While excessive sun exposure can contribute to skin aging and breakdown of collagen and elastin fibers, it is not a direct factor in the breakdown of hyaluronic acid fillers like Restylane Lyft. The primary factors influencing the longevity of dermal fillers are:1.) Metabolism: The body's natural metabolic processes play a significant role in breaking down hyaluronic acid fillers. Different people have different metabolic rates, which can affect how quickly the filler breaks down.2.) Product Characteristics: The specific formulation of the filler, including the cross-linking of the HA molecules, can influence how long the filler lasts. Some formulations are designed to last longer than others.3.) Injection Technique: The skill of the injector and the depth at which the filler is injected can also impact how long the results last.4.) Individual Variation: Each person's body may react differently to the filler, leading to variations in how long the results are maintained.While sun protection is important for overall skin health and can help prevent premature aging, it is not a direct factor in the breakdown of Restylane Lyft or other HA fillers. If you're considering getting dermal fillers, it's best to consult with a qualified healthcare provider who can provide you with personalized information based on your unique situation and goals.