Gain revealed her sexy back.

In a recent picture, Gain filming for the 2013 'Face Slip Hydrating Compact' photo shoot for the makeup brand Espoir was revealed. Gain, who normally puts on dark eyeliner, once again showed off her clear skin with dark eyes.

One staff member said, "Many people have been asking us about our products after seeing Gain's picture online. During the summer, many customers were interested in Gain's bronze eye makeup, but this fall, I think many customers will be looking for the makeup that creates the smooth skin like that of Gain."

Photo Credit: Online Community