Features: 1 Use color correction technology to brighten and whiten teeth. By balancing the different tones of the teeth, it can hide stains and improve brightness. 2. Color correction starts from the color wheel, and purple and yellow are opposite complementary colors. Applying purple to the teeth neutralizes the yellow background and eliminates them, revealing a brighter white shadow. Isn't that cool? 3. We found the perfect dark purple, which can neutralize yellow. A new method of cleaning teeth. Non invasive whitening treatment. 4. Our color corrector combines two water-soluble dyes to eliminate any yellow shadow to get the brightest smile without leaving any residue. 5. Clean your teeth without damaging your gums, so that you can have more beautiful and whiter teeth. Note: due to different display and lighting effects, the actual color may be slightly different from the image. Due to manual measurement, please allow a deviation of 1-3cm. Description: capacity: 30ml color / style: as shown in the figure, including: 1 x tooth whitening agent