no no no and no
You should not comb or scratch your scalp before you apply a perm. Perms contain very harsh chemicals and you would not want to apply it to a scalp that has any open cuts.
Yes
My cousin is a hair stylist, and she use to do my hair everyday with the best shampoo in the world. But when you use your nails on your scalp, it WILL clean it better than your normal finger tips. On your scalp you have dry leftovers on the scalp that can actually damage your hair roots and make it about 97.9% dryer than normal. Your nails can help scratch all of the dry and brittle scalp pieces off. But is you are worried that taking off all the dry stuff is damaging your scalp, it won't. It is like your skin. If you get a very small paper cut or a bite, it will go away and and turn into your normal skin like it never happened. But while scratching your scalp DRY it will damage your hair. As when you wash your hair, it is moist and easy to handle. When your scalp is dry it can ruin your scalp and give you lice. But when you wash your hair and scratch all of that gross dry scalp pieces off, the water washes it all out still leaving it all moist so it wont damage or give you lice. Also, while washing all the soap and bubbles out of your hair, you should also use your nails on your scalp to make sure you got all of that extra dry and gross scalp out of your hair. But to make sure you really got it down, wash your hair twice! However, using a hairbrush vigorously will produce the same result, albeit without washing away the dry skin. But it will wash out next time you wash your hair.
The scalp smells because some people do not bathe properly or when they do wash their hair, they do not scrub it in the correct way. You are not supposed to scratch it with your fingernails, but you are supposed to gently mesage your scalp with the shampoo. Also, try to wash your pillowcase often because of bacteria and oil and sweat buildup. Doing this could also help acne go away since there is not Bactria accumulating on the pillowcase.
No, because it is attached to your scalp.
what is hair and scalp contra - indication
No it doesn't because when you don't wash your hair for a couple days when you sweat or just didn't wash then the oils in your hair will build up and your scalp will actually start to peel like dandruff so actually shampoo conditions your scalp and hair and keeps the right amount of oils in your hair and on your scalp so if you sweat than wash your hair and at least wash your hair at least every other day. If your hair was short it would clean itself (short cut men would wear) but if it is long it won't.
No, because if you don't wash your hair daily then it would be filled with grease that comes out of your scalp similar to sweat.This question is talking about the actual hair not the scalp that gets damaged or counted as washing!
The study of the hair and scalp is called trichology.
incorrect use of heat on the hair and scalp
It affects a little of your scalp like dryness but it affects your hair most not skin just scalp
You lose so much hair when the scalp is dry because the cells in your hair needs to be hydrated too. The lost hair is a result of the dead cells on your scalp.