We are unable to give a guarantee however we estimate an 80% reduction after a course of 8 treatments and recommended intervals. Factors which can impact how successful results are include: hair colour, hair texture, skin colour, treatment intervals, not adhering to treatment protocols, hormonal imbalances, medical history can all interfere with outcomes. Unfortunately, areas influenced by hormones i.e. facial, neck, navel, and nipples cannot be given the same guarantee as it is out of our control. Treatment of these areas is very successful in reducing hair growth but new hairs may be stimulated to grow in the future.