A dry, itchy scalp is a common issue that affects people of all ages, often made worse by weather changes, product buildup, stress and underlying scalp conditions. The good news is that with a better understanding of what’s behind your scalp discomfort and a few smart adjustments to your care routine, you can restore balance and comfort. Learn how in this blog.
Understanding the causes of a dry, itchy scalp
Your scalp is skin, and like the rest of your body, it can sometimes become dry, irritated and inflamed. But while dry skin on your hands or face is easy to spot, scalp dryness can be trickier to identify because of the hair covering it.
Common causes of a dry, itchy scalp include:
- Environmental factors: Cold, dry weather and hot showers can reduce natural moisture levels and compromise the scalp’s protective oil barrier.
- Over-washing or harsh shampoos: Cleansers that strip away too much oil can leave your scalp feeling tight and flaky.
- Product buildup: Styling products and conditioners can accumulate over time, blocking pores and trapping irritants.
- Underlying scalp conditions: Conditions such as eczema, seborrhoeic dermatitis and psoriasis can all cause itching, flaking and dryness.
- Stress and diet: Stress can increase inflammation in the skin, while a lack of hydration and essential fatty acids may weaken the scalp’s barrier function.
If you’re noticing persistent itchiness, flaking or scalp tenderness, it’s important to identify whether you’re dealing with general dryness or a specific scalp condition that needs a more targeted treatment.
How the seasons affect the scalp
Each season presents its own challenges for scalp health:
- Winter: Cold weather and indoor heating can lead to dryness and flaking.
- Spring: Increased pollen levels may cause general skin sensitivity.
- Summer: Heat, sweat and UV exposure can irritate the scalp and affect its natural oil balance.
- Autumn: Changing humidity and temperature can make the scalp feel tight or itchy as it adjusts to the cooler weather.
Adapting your routine slightly – for example, using richer conditioners in winter and lighter cleansers in summer – can help maintain balance throughout the year.
How to maintain a healthy scalp
A healthy scalp barrier helps maintain hydration and comfort. Simple adjustments to your daily routine can support this protective layer. Here are the steps we recommend:
1. Choose gently cleansing hair care products
Wash hair using mild shampoos or cleansers designed for sensitive scalps. Avoid over-washing and try to use cold or lukewarm water rather than very hot water, which can dry out your skin.
2. Keep your scalp hydrated
Drinking water regularly and including foods rich in essential fatty acids, such as oily fish, flaxseed and walnuts, into your diet can help maintain a protective and healthy skin barrier.
3. Limit heat exposure
Heat can strip your skin of its natural oils, resulting in a dry or flaky scalp. Allow hair to air-dry when possible and use a heat protection spray when styling.
4. Avoid scratching
Scratching can aggravate irritation and damage the scalp surface. If your scalp feels itchy, gently massage your scalp or use a soothing scalp treatment for relief. If you have an ongoing scalp condition, a medicated shampoo such as Polytar may be recommended by a healthcare professional.
5. Maintain a balanced routine
Over-treating the scalp with multiple products can cause an imbalance. Introduce changes gradually and monitor how your scalp reacts and responds. That way, you can eliminate problematic products from your routine.
6. Protect your scalp from the sun
In sunny weather, protect your hair and scalp from UV exposure with a hat or bandana. You should also apply a layer of sun protection on your parting, where the scalp is more exposed to the sun’s harmful rays.
How does stress influence scalp health?
Stress is known to affect the body and skin in negative ways. When stress hormones such as cortisol rise, they can influence inflammation and oil production, occasionally leading to increased scalp sensitivity or dryness. While stress alone doesn’t cause scalp conditions, it can aggravate existing irritation.
Taking steps to manage stress through regular exercise, relaxation techniques and adequate rest may support both scalp and skin comfort. Maintaining a consistent haircare routine can also be soothing and may help create a sense of calm and stability during busy or stressful periods. This, in turn, can have long-term benefits for your overall scalp health.
When is an itchy or flaky scalp the sign of a bigger problem?
Sometimes, a dry or itchy scalp may be linked with an underlying scalp condition such as psoriasis, seborrhoeic dermatitis or eczema. These conditions can cause symptoms such as scaling, pruritus (itchiness) or increased oiliness.
If you have ongoing or worsening scalp discomfort, it’s best to seek advice from a healthcare professional or pharmacist. They can recommend suitable products or treatments specifically tailored to your needs.
How to manage a dry, itchy scalp with Polytar Scalp Shampoo
When scalp conditions are present, a medicated shampoo such as Polytar can form part of a care routine on the advice of a healthcare professional. Polytar Scalp Shampoo is indicated for the treatment of scalp disorders, including psoriasis, seborrhoeic dermatitis, eczema, pruritus and the scaling associated with these conditions. It can also help manage itchy, oily scalps and dandruff.
If you have questions about scalp care or medicated products, speak to your pharmacist or GP for professional guidance. Always read the label and use only as directed.
