Girls' Generation's member Sooyoung revealed the secret to her flawless skin.

On September 23, Sooyoung posted on her Instagram, "Moisture face mask during season change hehe" along with a picture.

In the picture, Sooyoung's face is covered with a moisture face mask. She is making a silly face at the camera, arousing laughter.

Internet users who saw this commented, "Sooyoung is so cute," "Your skin is good even if you don't do that," etc.

Sooyoung is currently playing the role of Lee Bom in the MBC drama "My Spring Days".