Stacking artificial lash extensions

A method, comprising;

• applying adhesive to an underside of upper natural lashes, wherein the underside of the upper natural lashes is a side of the upper natural lashes closest to an upper waterline of an eye;
• arranging a first plurality of lash extensions at the underside of the upper natural lashes along a natural lash line, wherein each of the first plurality of lash extensions comprises a first plurality of artificial hairs and a first base from which the first artificial hairs protrude, wherein the first base comprises a top side designed to attach to the underside of the upper natural lashes;
• applying adhesive to bottom sides of the first plurality of lash extensions that are arranged at the underside of the upper natural lashes;
• and
• arranging a second plurality of lash extensions at the bottom sides of the first plurality of lash extensions that are arranged at the underside of the upper natural lashes, wherein each of the second plurality of lash extensions comprise a second plurality of artificial hairs and a second base from which the second artificial hairs protrude, wherein the second base comprises a top side designed to attach to a bottom side of one or more of the first plurality of lash extensions.