Teens should speak with a dental practitioner before whitening; waiting till full adult dentition
https://telegra.ph/In-Office-vs-At-Home-Teeth-Whitening-Your-Guide-to-Professional-Teeth-Whitening-Gilbert-and-Affordable-Teeth-Whitening-Gilbert-A-04-18
Teenagers need to speak with a dental expert before whitening; waiting till full adult dentition and utilizing low concentrations assists secure establishing teeth and gums.