From a LA Salon:
"Brazilian Blowout keratin hair treatment is taking Hollywood and the world by storm. If you have curly or frizzy hair, chances are you've heard of it. The answer to hair woes for Nicole Richie, Halle Berry, Lindsay Lohan and Ashley Tisdale can be the answer to yours as well! But there are many stylists out there...and many competing products. Some salons have been known to falsely advertise "Brazilian Blowout" when they are actually using something else, then you don't even know what you're getting. Some products contain much harsher chemicals than others, while some stylists claim their product is "chemical-free."
Let’s face the reality - if they were made of rainbows and butterflies, the blowout wouldn’t last beyond a few shampoos, the exact problem you must be having or you wouldn't even be considering the service. However, Brazilian Blowout uses chemicals that are gentle and semi-permanent because they lay on the outside of the hair instead of penetrating and changing its structure.""