Hello Ladies

I am thinking of doing sort of a treatment to my hair. My hair type is little bit curly and thick. After giving birth, I noticed that it started to be more dry no matter how much hair cream I use, and also fall out, in enormous quantities, which got me really scared. So I heard about the keratin and the japanese treatments that's add shine and make my hair looks good, but kinda skeptical. Has anyone done any of them before? and if so, was it any good? how long did it last. etc... Any info would greatly help me decide.