I'm 고민 about teeth whitening.

Since I usually enjoy drinking coffee, my teeth are a bit yellowed.ㅜ

I think it stands out more and looks more noticeable when I wear makeup.

I tried the home care whitening product, but it didn't really have much effect.

I want to try teeth whitening at the dentist, but I was told I need to undergo several sessions.

I'm worried because I also have symptoms of coldness...