Keeping it natural is key, not natural scare crow or caveman. By natural I mean nothing over the top in term of cut, style and color. Urban look is very in at the moment. However nothing longer than shoulder length. If you prefer a little more texture, then opt for medium-long shag with or without layers. Scissors are not used to create shag or layered look but rather razors. Spiking of the hair to create the "bed-head" look is still very much in fashion. The secret here lies in the getting the look just right by appearing messy while being clean.
