It's a sad, but true, fact that many young boys will one day experiment with facial hair. Regrettably, some will even allow the hair on their upper lip to grow wild and long into what is called a "mustache." For these boys, special consideration should be given to the grooming of the mustache so as not to let it become bushy and unkempt. Each of these 4" (10.2 cm) long (when open), metal and plastic combs snap open with the push of a button and if used regularly can turn an adolescent mustache into something almost tolerable