For the first 48 hours your teeth absorb colour more easily. Avoid coffee, tea, red wine, cola, tomato sauces and smoking. Stick to a “white diet”: rice, chicken, fish, milk, yoghurt.
After that, drink coffee through a straw and rinse your mouth with water.
Mild sensitivity is normal and passes within a few days. Use a toothpaste for sensitive teeth. To make the result last longer, have a professional clean every 6 months.
