Wella Professionals Wet Extra Volume Styling Mousse is the perfect addition to your hair styling & grooming regime. Your style will stay put all day long, whilst the show-stopping volume is sure to get heads turning. Boost your tresses & instil gorgeous volume into your style with this Wella Professionals Wet Extra Volume Styling Mousse. Creating an essential foundation for any great style – prep your hair like a professional with this styling saviour. Wella Professionals Wet Extra Volume Styling Mouse has a hold level of 3.