This product works!
I was hesitant, to say the least , about doing keratin myself.  i watched a ton of videos and how-tos and decided on keratin research brand because of reviews both bad and good.  i used the product as directed, and i used a mask during the drying process- totally smells-i actually didnt wash my hair for two days afterwards even thought they i could do it right away.  IT WORKS!  my hair is soft and shiny, and frizz free.  it took some of the wave away but thats ok with me.  its a little hard to do the back of your head with a flat iron, but i was slow and steady... its was $65 and a Brazilian keratin is at least $300 near me. so if i have to do it again in three months i'm good!  try it!!!
Rating: 4 stars