I've never tried any Nature Republic (네이처리퍼플릭) sheet masks before, so I decided to pick this one up at my local Korean beauty store near my home! ♥ This mask is the Real Nature Mask Sheet (리얼 네이처 토마토 마스크 시트) in the tomato type and the front of the mask says 매끈미백 토마토 which means smooth whitening tomato. The box with the check inside says 미백기능성 and this means whitening function. If you are looking for a whitening sheet mask, the keyword you should look for is 미백. ʕ•ᴥ•ʔ
