Kalo is a hair inhibitor, it will prevent about 10% of the hair from growing back each time it is used after the hair has been removed by the root. You should notice results after about 2-3 hair removal sessions. Most people will require about 10-15 sessions to completely rid the hair. Kalo Spray is ideal for treating all external body parts. Kalo is applied after the hair has been removed by the root. Kalo should be applied 3 times a day of hair removal and 3 times the next day.