Iv used the Brazilian Keratin hair treatment & it didnt damage my hair, should i try the Japanese Treatment?

Well i have crazy curls and i hate them, no matter what anyone says i really despise curly hair, and ive been just using a CHI straightener to straighten it since 7th grade and now im in highschool. Iv tried the Keratin and it worked pretty well but when my hair was wet it STILL was curly. The Keratin or straightening NEVER damaged my hair surprisingly and now im interested in the Japanese Treatment and need some info?