B2ST's Kikwang made fans melt with his gorgeous smile.

On January 25th, Kikwang posted a new selca on Twitter and wrote, "Sneakily.."

The idol, who appears to be the last person in the room, decided to whip out his cellphone to take a cheeky picture backstage. Fans were drawn to his pearly whites and blemish-free skin; some male fans even asked Kikwang for some beauty advice.

Comments included: "Because of oppa's healing smile, I'm feel revitalized!", "Asking as a guy, what is your skin secret?", and "Can't wait for your concert!!!"

B2ST will soon be holding their 'Beautiful Show' concerts on February 4th and 5th at the Seoul Olympic Gymnastics Stadium. Afterwards, they will then embark on their 21-city world tour.

Source: Kikwang's Twitter