Choose 3D W for the lightest, airiest coverage; 4D for a light-to-medium step; 5D for balanced medium fullness; 6D for a fuller lash line; 7D for bold high-density coverage; and 8D for the maximum density in Winky Beauty’s standard W range. Here, the D number is the number of joined 0.07mm fibers in each W unit. Final selection still requires natural-lash and complete-design assessment.