Activated Charcoal Teeth Whitening Powder, produced with natural ingredients, helps you clean the yellowed tooth layer and get whiter teeth. Dermatologically tested. It also contributes to the elimination of stains and bad breath on the teeth. What you eat and drink (painted areas like cigarettes, tea and coffee) and the amount of fluoride in the water you drink can cause color differences in our teeth. It especially helps remove stains caused by tobacco and coffee. It helps to effectively clean tooth enamel and achieve a white smile.