Describe Net content: 4ml Features teeth whitening serum pen Gum Treatment Gel contains active ingredients that gently and effectively remove stubborn stains and all types of dirt deposits that cannot be removed by brushing alone. Whitens Teeth & Whitens - This enamel-safe serum will leave your teeth visibly brighter after every treatment while protecting your gums, making it ideal for those with sensitive teeth and gums. Gum Treatment Gel ---- This advanced gum treatment gel, specially developed to treat gum recession and gum indentation, provides a soothing and rejuvenating experience for your gums. Easy to use and carry: The tip of the teeth whitening kit has a small brush, which is very convenient and easy to apply the essence formula directly to the teeth, evenly coating the teeth without staining. Gum Shield Treatment Gel --- This teeth whitening pen is safe and provides fast results in just 1 minute a day! Dental Treatment Gel Includes 20+ Applications and Consecutive Applications Comment: 1. Manual measurement tolerance is 2-5g. Please don't mind your substitution. 2. Due to differences between different monitors, the image may not reflect the actual color of the item. Thank you so much! 3. SKU color is the color of product packaging Package Included: 1 * Teeth Whitening Pen​