It's a Make-Up Cafe opened by well-known makeup artists, 김종현(Kim Jong-Hyun) & 박기석(Park Gi Seok). Grab a cup of drink from the menu and you could trial on a makeup-spree from the makeup counter!
If you like to have a make over from the Mr Kim or Mr Park, it costs 30,000won (approx. 30USD), excluding fake eyelashes!
Read my experience here: http://polkadotyyann.wordpress.com/2014/06/21/makeup-cafe-in-korea-cafe-d-maka/