The longevity of lash extensions can vary depending on several factors, including the type of extensions, your natural lash growth cycle, your lifestyle, and how well you care for them. Generally, lash extensions can last anywhere from two to eight weeks, with the need for regular maintenance and fills. Here's a breakdown of the typical lash extension lifespan: Initial Set: When you first get lash extensions, they are applied to your natural lashes individually. A full set can last up to eight weeks if cared for properly. However, it's common for clients to schedule a fill or touch-up appointment around every two to three weeks to maintain a full and fresh look. Natural Lash Growth Cycle: Your natural lashes have a growth cycle, which means that they naturally shed over time. This shedding can cause the extensions to fall out as well. On average, a natural lash cycle is around six to eight weeks. This is why lash extensions may need filling or maintenance every few weeks. Lifestyle and Care: How long your lash extensions last also depends on your lifestyle and how well you care for them. Factors such as exposure to water, steam, oil-based products, and rubbing your eyes can affect their longevity. Proper care, including gentle cleansing, avoiding oil-based makeup products, and not pulling or tugging at the extensions, can help extend their lifespan. Type of Extensions: Different types of lash extensions, such as synthetic, mink, silk, or hybrid lashes, may have varying longevity. Some types may be more durable and last longer than others. Fill Appointments: To maintain the fullness and appearance of your lash extensions, you will likely need to schedule fill appointments every 2-3 weeks. During these appointments, the lash artist will add new extensions to replace those that have naturally fallen out.