Teeth naturally darken over time due to daily habits and internal factors. External stains come from... View MoreTeeth naturally darken over time due to daily habits and internal factors. External stains come from pigmented foods like berries, tea, and red wine, which cling to enamel's porous surface. Smoking adds tar and nicotine buildup, creating yellow hues that professional cleanings struggle to fully erase.https://www.enfieldroyalsaudia.com/
