I'm worried about my yellow teeth. 😢

Did my teeth turn yellow because I drank a lot of cola when I was young?

My teeth are yellow..ㅜㅜ There’s an old saying that eating coffee or cola can change your teeth..ㅋㅋ

Previously on Infinite Challenge, Yoo Jae-suk said to Jung Hyung-don

When I had yellow teeth, I couldn't even smile..ㅜㅜ

Haha haha

I tried using whitening teeth products.

Once it turns yellow, it doesn't go away.

Do you have any effective methods you've tried?