Lash BoostingnLengthen u0026amp; ThickenernImmediately improving lash appearancenlash conditioner that helps prevent breakage.nAll new GrandePRIMER Lash Boosting Pre-Mascara Lengthen u0026 Thickener is infused with nutrient rich mini fibers to boost your natural lashes while immediately improving lash appearance. It contains the special ingredient Sympeptide 226EL, a lash conditioner that helps prevent breakage.