FX Lashes in a C Curl provide a glamorous curled lash which makes them compatible with curly natural lashes and give a similar effect to that of eyelash curlers. Lash FX Synthetic eyelashes are waterproof, heatproof and chlorine proof. They are extremely light and comfortable and can last up to 12 weeks when cared for correctly. Each pot contains approx 3000 per pot. These lashes come in a small pot, and are available in a variety of lengths and in two thicknesses: Thick (0.15) or Extra Thick (0.20).