Fluoride is also safe to brush your teeth with — but not to ingest. The Humble Toothpaste contains an effective but safe level of sodium fluoride at 1400-1500ppm for adults.

Fluoride is a mineral that’s naturally found in water, soil, rocks, air, and plants. It is commonly used in dentistry as it stimulates the enamel remineralization process to strengthen your teeth and redeposits minerals, like calcium, back onto your teeth to help prevent tooth decay. It also controls the acid inside your mouth to help resist acid attacks by bacteria and sugar from foods.