It really depends on a few factors like your hair color, hair thickness, and your skin type, but generally you're looking at somewhere between six to eight sessions for optimal results. They're usually spaced about six to eight weeks apart because you need to let the hair cycle through its natural growth phases. So realistically you're committing to a year or more of treatment. Some people see great results faster, some people need more sessions. It's not a quick fix thing, but most people say it's worth it once they get through the process.