Lots of people have a problem with how dry and itchy their scalp is. Sometimes, it's a skin condition that needs attention; at other times, it's just the environment or something you're doing. Whatever it is, dry, itchy scalp can be quite embarrassing. You have to scratch your head often, people are going to not think you're very polite or well brought-up.
In good measure, you'll find that half the time, when people complain of dry itchy scalp problems, it's just something that they're doing. They might use very harsh shampoo that just strips their hair and scalp of natural oils. Or they could have a gentle shampoo, but they tend to use it three or four times a week. Sometimes, they don't protect their hair with a proper cap when they go to the swimming pool or the beach.
In good measure, you'll find that half the time, when people complain of dry itchy scalp problems, it's just something that they're doing. They might use very harsh shampoo that just strips their hair and scalp of natural oils. Or they could have a gentle shampoo, but they tend to use it three or four times a week. Sometimes, they don't protect their hair with a proper cap when they go to the swimming pool or the beach.