Like many other semi-permanent treatments, a Brazilian Blowout usually lasts around 3 months because of hair growth. The good news: it's a cumulative treatment. This means that each treatment adds to the results of the previous one. The more you use it, the better your hair texture will be. Brazilian Blowout is a brand name of a smoothing treatment product that has its own specialized chemical makeup. Whereas Keratin treatments are smoothing treatments that contain the protein keratin, produced by many different brands and manufacturer Keratin treatments offer more smoothing and deep conditioning benefits than the Brazilian Blowout. They generally tend to straighten your hair and reduce the volume of your locks. If you don't want completely straight hair but want to reduce frizz and want that amazing shine, then you can also have curly hair with Brazilian Blowout. If you usually style your hair straight, a keratin hair straightening treatment service could shorten your blow-dry time by 40%-60%.