Originally Posted by HairFacts
Most consumers think “permanent” means lasting forever. Unfortunately, that’s not always the case as it’s used in advertising. For instance, a permanent wave in your hair is not really permanent, and a permanent marker is not necessarily permanent.It’s difficult to assess a new hair removal method that claims to be permanent. Most people figure that after a certain amount of time, it’s unlikely that a hair will ever return. That’s why several people, myself included, have suggested a specific definition of “permanent.” Some of these definitions seem inadequate to me. One manufacturer claims their device is permanent based on results after 9 weeks. That’s ridiculous. Waxing can last that long, and it’s been clinically proven temporary.
For the purposes of hair removal, the hairfacts definition of “permanent” is being able to go a year after your final hair removal treatment without having to use another method of hair removal. Keep in mind that a year might not be long enough to determine true permanence, but most consumers would be happy to have one treatment a year.
The only method of clinically proven permanent hair removal is electrolysis. Some lasers and flash lamps have been able to achieve permanent hair reduction, as discussed below.*