yes
no but washing your hair to much is bad
Washing too much or too vigorously can make your head sore and uncomfortable, yes.
No but it can be damaged. :)
Maybe not because you will need extremely hot water
It could either be growing because your hair has started getting split ends, or you are washing your hair too much. Split ends prevent hair growth and that's when you need to get your hair cut, and washing your hair too much strips it of natural oils which help hair grow.
There aren't really any disadvantages to using shampoo but it is bad if you use it too much. Washing your hair too frequently is unhealthy for your hair because washing your hair gets rid of the natural oils produced from your body that it needs to stay healthy.
it is if u wash in the week too
you might be able to save it with conditioner but you may have destroyed the hair too much and it will fall out until all the damaged hair is gone
It can be bad for the scalp because you are washing away the oils. There really is no need to wash hair daily. It's like the skin, if you wash it too much it can become dry and cause you problems.
It is not recommend to use washing up liquid to wash hair with. Washing up liquid is too harsh and can dry out the hair and scalp.
The simple answer is, it isn't. I don't use shampoo since I discovered that merely washing it under the shower along with massaging with the fingers gets my hair perfectly clean and soft as if it had been washed with shampoo. The chances are that shampoo, detergent made from fossil fuel oil, actually damaged the hair follicles by removing too much of the natural oil.
It's bad for your hair to be washed to much. As long as your only washing your hair once a day, you should be fine. Also, use lotion because the excessive amount of soap can dry out your skin.