Which common hair product is used to add volume?

Mousse is specifically designed to add volume and body to the hair. It is a lightweight foam product that is applied to damp hair, and as it dries, it creates lift at the roots and enhances the overall fullness of the hairstyle. Mousse contains polymers that provide hold and support, making it a popular choice for those looking to add texture and volume without weighing the hair down.

Conditioner, while beneficial for hair conditioning and smoothing, does not inherently add volume; it is typically used to moisturize and detangle. Hair gel provides hold and styling control but can cause hair to feel stiff and may not add volume in the same way mousse does. Pomade is primarily used for sleek styles and shine; it tends to weigh hair down and can reduce volume rather than enhance it.