Eyelash extension is a beauty technique that attaches individual false lashes onto natural lashes using a specialized adhesive. This helps the lashes appear longer, fuller, and naturally curled, effectively correcting the shortcomings of short or sparse lashes. False lashes can be made from silk, synthetic fibers, or mink, while the techniques include Classic (one false lash applied to one natural lash) or Volume (multiple false lashes applied to one natural lash). The process requires precision to avoid damaging the follicles and to ensure eye safety.