In my experience with eyelash extensions, one crucial tip for quick fills is to ensure you are applying the glue directly onto the natural lash rather than layering it on previous extension glue. This technique helps improve retention significantly. From what I’ve tried, magic glue provides a fast bond but can sometimes appear tempting to rush through the set. However, it’s important to remember that lashing a full set in 30 minutes is unrealistic if you want durable results—taking the time to focus on proper application pays off. Another key point is to always remove outgrown lashes before applying fills. If you leave old lashes attached, your new extensions won’t adhere well and can cause premature lifting or discomfort. Removing these old extensions gently but thoroughly ensures your natural lashes remain healthy and the new extensions adhere directly to the natural hairs. Additionally, working in a well-ventilated area and using the right amount of magic glue can prevent clumping, ensuring a seamless finish. Avoiding excessive glue on the tips of the extensions helps preserve their natural look and prevents irritation. Overall, my personal recommendation is to balance speed and quality: quick fills with magic glue are possible, but best retention comes from focusing on precise placement on natural lashes and proper removal of outgrown lashes. This method not only extends the life of your extensions but also maintains lash health, making touch-ups more effective and less time-consuming in the long run.