Flat lashes are suitable for a classic lash set. Flat lashes come in a wide selection of curls, ideal for any eye and style, the same as regular individual lashes.

The difference between the regular lashes used for classic lashes and flat lashes is the base. The base of flat lashes is flattened, and this shape makes the lash itself super soft and much lighter than the typical one. 

The concave surface on a flat lash provides a greater contact area for adhesion fastening, which makes the lashes last much longer than a traditional extension. Also known as Royal Lashes, cashmere lashes, or Ellipse Lashes, flat lashes have a reversed oval shape, rather than being rounded.

Flat lash can only be placed on the top or bottom of the natural lash. As for regular lash extension, it can be placed on the top, side, or bottom of the natural lash.