Final answer:
The styling product that resembles shaving foam and is used to build moderate body and volume in hair is mousse.
Step-by-step explanation:
The styling product that is a whipped product resembling shaving foam and builds moderate body and volume is mousse. Unlike hair spray, which provides a stiffer hold to maintain styles for longer periods, mousse has a lighter consistency that helps to increase volume without making the hair feel 'crunchy'. Mousse is typically applied to damp hair before styling to add body and improve texture.