This ultimately depends on how resilient your body hair is. Factors that affect hair growth include medication, hormones, and genetics. With continuous treatment, your goal is to safely destroy your roots to the point where they can no longer grow normally. Some people can have their hair grow back in 2-6 years, while others report not seeing any growth for at least 10 years. If you complete your treatments and reach that threshold, your hair will unlikely grow to the same thickness and frequency as normal hair. Jump to: Expected Results