works on both thick hair and baby fuzz [SEP] before this i was using a yes finishing touch buzzer for fine hairs but it did not cover enough surface area this one is better covers more area at a time and removes hair that is very fine and also very thick hair as well i used it on my legs and for fine hairs on my face baby fuzz on my stomach and upper thighs and it worked great for all of those areas the hair that is buzzed off is caught in a section that pops open when you are ready to clean it so you are not buzzing your hair onto the floor which is another great feature and upgrade