There are three types: strips, brush-on gel and toothpaste. Strips are easiest since you can do other things while wearing them, and Perioe's one-week pack has 14 strips. Gels need to follow the instructions, and VUSSEN 28 is a big tube. For an all-in-one, see the Olive Young-exclusive 4-week whitening set with gel and toothpaste (5,819 reviews). Read the directions first, especially with sensitive teeth.
![[Ollyoung Exclusive] LiveOrals Teeth Whitening + Whitening Toothpaste Ultimate Set (4-week supply)](https://image.oliveyoung.co.kr/cfimages/cf-goods/uploads/images/thumbnails/10/0000/0026/A00000026183401ko.png?l=ko)
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