The medical name for these bumps is pseudofolliculitis barbae. As said, hair might not grow back for up to six weeks after a wax treatment, making waxing a great choice if you don’t want to worry about hair removal when on vacation or other special occasions. 5 Things You Need To Do Every Day For Flawless Skin Here's how to handle hirsutism step one: How long does hair have to be to wax chin . As with plucking, shaving is only a. By heating it, the laser kills the hair follicle. How long does hair need to be to have a waxing service done? It can happen if you take corticosteroids for a long time or if your body produces too much cortisol. It's a better option for women who have dark hair on their chin. Trim any long hairs on your face. Shaving can remove chin hair, but it may lead to irritation that causes shaving bumps. One area on most males that does grow whiskers just due to a normal level of hormones is on the chin. And if not, waxing would be useles...