That depends on many different factors, sorry there is no one size fits all answer. One of the biggest advantages of laser hair removal is the pure speed of the laser hair removal treatment process in combination with the long lasting permanent results. For example, to remove excessive hair from your back with laser hair removal usually takes about an hour or so depending your body size. In stark contrast, a full back electrolysis hair removal treatment process can take up to and over 225 hours! WOW!