In my early years that is twenty five i had studied that keratin was really helpful in hair growth and that it helps in production of hair.so i gave my daughten foods that were rich in keratin .but then i had thought that excess of everything can cause harm.so then now what i want to know is that does this keratin treatment have any side effects and damage hair in any way?can i know what are the listed dangers that can be caused after Keratin Hair Treatment ?if i get to know them it will be easier for me to act now than later.
