A Lash Lift can last 6-8 weeks but can vary from person to person. There is no need for any maintenance appointments in between but you will need to have the process repeated every 6-8 weeks to lift the new hair growth. There are some situations that may cause the lift to drop/weaken prematurely such as swimming, use off harsh products or heat. If you find that your lift does not last the full 2 months, you can repeat the treatment after a minimum of 4 weeks of having the initial treatment, but not before.