Hair mousse is a lightweight styling product that adds volume and texture to hair. It typically comes in an aerosol can and is applied to damp hair before styling. Mousse helps to enhance curls, waves, or straight styles, making it a popular choice for various hair types. When using hair mousse, a small amount is usually sufficient. It can provide hold without making hair stiff or sticky. Many formulas also contain ingredients that offer heat protection and moisture, making mousse a versatile option for achieving desired hairstyles while maintaining hair health.