Hair with straightening cream can last up to a few hours. If the cream is used with a straightening iron, this will improve the chances of hair staying straight.
Hair straightening creams are not quite effective as they claim. For me cream works for 2 hours and then my hair start to look dry and dirty eventually effect is gone.
Hair does not stay straight from straightening cream for very long. This is because it is easy to wash out. The best way to straighten hair is to use heat. You can use a hair straightener or you can use your hair dryer and brush to straighten out your hair.
about two months but if some water fall on it the wet place will becomes little thick than the other places so beware from touching the water and dont try to iron it becouse t will fall too