The Tarte Opening Act Lash Primer is a high-performance lash primer that helps to amplify the effects of your favorite mascara. This primer is designed to be applied before mascara to create a smooth base for mascara application. It helps to condition and nourish the lashes, making them appear longer, thicker, and more voluminous. The primer also helps to prevent smudging and flaking, ensuring that your mascara stays in place all day. It is suitable for all lash types and is a great addition to any makeup routine.