As a versatile hair styling product, hair mousse is a popular choice for both short and long hairstyles. When hair mousse is applied to wet hair that is allowed to air dry, the hair is often left with a "wet" look that can be "crunchy" feeling, but unlike hair gel, hair mousse combs out easily for a softer look. When hair mousse is applied to wet hair that is dried with a hair dryer, it provides additional volume and hold.