Wella Professionals Natural Volume Wet Styling Mousse. When you need your styling mousse to give hair natural movement, choose Wella Professionals Natural Volume. Its ideal for giving fine or limp hair a volume boost that ll attract attention without looking over-styled. It has a hold level of 2 which gives you a soft, refined hold but which leaves the hair able to move naturally. Application is simply a case of distributing the mousse evenly from root to tip into damp hair and then blow drying to the desired style.