Brazilian - edit

Just curious if anyone has tried numbing creams before a Brazilian and if they worked? I've gotten Brazilians before and tbh they aren't too bad but I'm also wondering if these numbing creams actually can help.

EDIT: I know the area should be clean. There are numbing creams I've seen people use for tattoos or sometimes waxing. You're suppose to leave it on for an hour prior to the appointment. Then right before clean and wipe the area clean. I just want to know if anyone has used them?