Do not pull on the lash. Please contact your technician to make an appointment to have them removed or replaced, in order to avoid damage to your natural lash. As your natural lashes fall out due to the growth cycle, you will need refills when your new lashes grow in. At first, you may find that you need a refill every 2 to 3 weeks. As you become accustomed to the extensions and with a little practice in maintaining the lashes, the time between refills may be extended to 3-4 weeks.