I am do for some hurtin

[perp69]

I just ordered some 35% teeth whiting gel to bleach my teeth. I think my teeth are gonna be screaming with pain. This stuff is suppose to have a analgesic in it so maybe that will help. Can't use it more than 30mins it says. I have used 20% before all night but nothing never this strong. Anyone used stuff this strong before and how was it?

Perp