A dry scalp can be problematic all year round, as it can be triggered and worsened by either very hot or very cold weather. It could also be neither of these things, and you may just find that you have very dry skin, including the skin on your head. Luckily, there are things you can do to make it better.
Use a moisturising shampoo, or one that is specifically for flaky scalps. Don’t confuse a dry scalp with dandruff, as they are two very different things. if you’re unsure, ask your hairdresser. Dandruff shampoo is likely to make a dry scalp worse.
Use a hair mask. Applying a nourishing hair mask every few weeks will help make your hair soft, and also moisturise your scalp.
Don’t scratch. Whatever you do, resist the urge to scratch if your scalp feels itchy. It really won’t help and will encourage skin to flake.