Unlike laser hair removal or traditional shaving, body waxing requires clients to grow out their hair to a certain length before their session. This is not true for eyebrow shaping, or any other facial waxing services. For body waxing such as arms, underarms, and bikini, the hair must be at least ¼ inch long, but no longer than ½ an inch. This will allow for the client to get the best results and the smoothest, cleanest hair removal.