What exactly are in-fills, why do I need them and how often do I need them?

In order to consistently have a full set of luxurious eyelashes, then in-fills are necessary to achieve your desired thick-lash look. Every 2-4 weeks, when your natural eyelashes have fallen out during the whole eyelash cycle, an application of extension lashes are necessary to keep your lashes looking their fullest and thickest best.