Describe the process of a Brazilian blowout.

The Brazilian blowout is specifically designed as a keratin treatment that works to smooth and straighten the hair. This process involves applying a solution containing keratin, which is a natural protein found in hair, to the hair shaft. The treatment helps to eliminate frizz and maintain a silky, smooth texture.

During the application, the keratin solution is worked into the hair and then sealed in using heat from a flat iron. This not only helps to enhance the natural shine of the hair but also provides a layer of protection against humidity and damage. The results can last for several weeks, depending on the hair type and aftercare, making it a popular choice for those looking for manageable, sleek hair.

Other options refer to different hair treatments: a permanent wave treatment adds curls, hair color techniques specifically focus on changing the hair color, and methods for adding volume don't provide the smoothing effect associated with a Brazilian blowout. Each of these options serves different purposes, but the Brazilian blowout's unique role is in enhancing hair's smoothness and reducing frizz, firmly categorizing it as a keratin treatment.