For tooth whitening products containing more than 6% of hydrogen peroxide, the margin of safety will be below 100, and they are thus not considered safe.
What percentage hydrogen peroxide do dentists use?
Both tooth-whitening options use peroxide-based bleaching agents. At-home systems contain from 3% to 20% peroxide (carbamide or hydrogen peroxides). In-office systems contain from 15% to 43% peroxide. Generally, the longer you keep a stronger solution on your teeth, the whiter your teeth become.Nov 17, 2020