There could be many reasons that a scab on your scalp will not heal. It could be very infected for example.
No.
its infected
The way to heal a scab on the scalp of a person's head depends on the size, and what caused the injury. A smaller scab could be healed by using peroxide. A large scab may need to be looked at by a doctor to determine the best treatment.
Probably not - but it would depend on the sport, and the location of the scab.
If one peels the scab off. Blood will appear again which gives bacteria the opportunity to get in. This is how the scab can get infected.
The blood will clot and turn into another scab. If you pick this scab, it will bleed again and will take longer to heal and leave a much worse scar.
Your scalp may sometimes get very dry,when this occurs it becomes itchy and with a scratch it may feel good but you may be cutting your scalp with out any pain,thus causing your scalp to have scaps...
If your belly button ring has a blackish scab you may have torn it or pulled it a little on your clothing. As long as there is not discharge or redness, it isn't infected.
The scab forms a seal over the cut, helps to keep germs at bay, and so lessen the chances of the cut becoming infected.
No idea sorry
buy a head and shoulders shampoo