Experience the versatility of double-sided eyelash extensions with the Cluster Lashes Extension Book. This collection features 20D, 30D, 40D, and 50D lash options ranging from 9mm to 20mm in length, allowing for customizable volume and length to achieve your desired look. Whether you're a professional lash artist or a beauty enthusiast, this extension book provides a comprehensive selection for every occasion. The easy-to-use format ensures efficient application, making it a must-have for enhancing natural beauty.