noun
affected look; made-up face
Refers to a facial expression that is deliberately put on, often insincere or artificial, like a forced smile or a contrived expression.
彼女は作り顔で笑ったが、目は笑っていなかった。
She smiled with an affected look, but her eyes weren't smiling.
写真を撮るとき、いつも作り顔になってしまう。
Whenever I have my picture taken, I always end up with a forced expression.