Feature: 1. Helps remove tea stains, coffee stains, tooth discoloration, and plaque. 2. Supports teeth whitening, reduces tooth surface debris, promotes oral hygiene, and helps maintain healthy teeth and gums. 3. Portable design for convenient use anytime, anywhere. 4. Formulated to deliver visible whitening results. 5. Simple to apply with user-friendly design. Instructions: 1. Brush and floss your teeth. 2. Dry the teeth with a clean paper towel. 3. Rotate the bottom of the pen clockwise until a small amount of gel appears on the brush tip. Additional rotations may be needed for first-time use. 4. Keep lips away from teeth during application. 5. Apply a thin, even layer of gel to each tooth using smooth strokes. Avoid contact with gums. 6. Allow the gel to remain undisturbed for 30 seconds. 7. Avoid eating, drinking, or rinsing for at least 30 minutes after application. 8. Use twice daily until desired results are achieved. 9. Always close the cap tightly after use to preserve product integrity. 10. Store in a cool place, preferably refrigerated. Specifications: Applicable object: Adult Function: Teeth whitening Net content: 3ml (3g, 0.1oz) Efficacy: Teeth whitening Package Included: 1 x Whitening Pen Notes: Due to differences in monitor displays, actual product color may vary slightly from images. Please compare the detailed dimensions with your expectations; allow 1–3 cm variation due to manual measurement. Contact us if you encounter any issues before leaving negative feedback. Thank you for your understanding.