Easy-to-use pen-type product for whitening. - Brand: Crest - Product Name: 3D White Easy to Use Whitening Pen - Capacity: 4ml - Instructions: Use twice a day for at least 14 days - Number of uses: Up to 70 uses Crest Whitening Gel Pen 4ml Crest 3DWhite Easy-To-Use Whitening Gel Pen, 1 Count 0.13fl oz (4ml) Whitening Pen White Teeth Tooth Care I bought this in the US, but I didn't use it, so I'm selling it. Unused, brand new. This is a pen-type product for tooth whitening gel sold by Crest, a popular brand in the US, allowing you to easily whiten your teeth at home. Main features of the Crest 3D Pen: Ease of use: You can easily care for your teeth at home without having to go to the dentist. Pen type: The gel is applied directly to the surface of the teeth, making it easy to apply to the desired areas. Effect: It is expected to remove stains that cause yellowing and dullness of teeth, and whiten teeth. ⇩Official Website https://crest.com/en-us/oral-care-products/crest-3dwhite-teeth-whitening-pen/?srsltid=AfmBOorYU3DzDs_sFy_3OAUHV1z1jyJjHAHDC-mC4HxTDzo0oKEOIIq_