Eyelash extensions, in which synthetic lashes are glued individually onto real lashes, have become the latest cosmetic trend sweeping the nation. The procedure is gaining momentum at a time when women yearn for that 1960s Twiggy look and cosmetic companies are focused on developing new formulas and wands to make lashes look longer and thicker.

“In the last couple of years, we've gone through an intense phase of fake eyelashes, and this is the logical extension,” said Didi Gluck, beauty director of Marie Claire . “It dovetails a little bit with the craze for hair extensions.”

Application of eyelash extensions takes approximately 90 minutes and involves bonding 25 to 35 extensions of different lengths and thicknesses to each individual eyelash hair. A range of products and methods are used depending on where the procedure is performed. A Florida physician, Alan J. Bauman says he transplants hair from his clients scalp onto the eyes.

“They give the eyes an instant lift, with no needles or injections,” said Tram Kim Nguyen, Glamour beauty writer. “You can roll out of bed looking great.”

While the prices are not steep—ranging anywhere from $250 to $500—the extensions last for up to six weeks, although most clients typically come back for touch-ups every two to four week to replace lost lashes.

“It sounds high-maintenance, but it's really for low-maintenance reasons,” said Soul Lee of the Shu Uemura Lash Bar in New York. “It will make your lashes look like you're always wearing mascara.”

As simple as the procedure is, it is still important to pay close attention to safety. Eyelash extensions should only be applied by licensed, trained technicians. Contact lenses should not be worn during the procedure. If the glue gets in your eyes, it may lead to complications.