Dandruff and dry scalp exhibit the same symptoms of itching and falling flakes, but they are different conditions. Dry scalp results when the skin lacks moisture, whereas dandruff results from excessive oil on the scalp and Malassezia yeast overgrowth. With a dry scalp condition, the skin becomes irritated and flakes off. On the other hand, with dandruff, yeast overgrowth causes excess oil and the buildup of skin cells, which eventually shed. A dry scalp can be triggered by dry air, including the dry indoor air produced by constant air conditioning use across the region, as well as contact dermatitis, ageing, and using products that strip the skin of natural oils.
Unlike dandruff flakes, dry scalp flakes tend to be smaller and whiter. Dandruff flakes are larger, and sometimes yellow-tinged, with an oily appearance. You most likely have dandruff if your scalp feels oily, itches intensely, or is inflamed. You can treat most dandruff cases at home, but treating dry scalp depends on what causes the dryness. If underlying conditions cause the dry scalp, seek effective treatment from a healthcare professional.
Common Causes of Dandruff
Now that you know what dandruff is and how to differentiate it from dry scalp, consider some of the common causes of dandruff:
- Malassezia: Dandruff can be a sign of seborrhoeic dermatitis, caused by an overgrowth of the fungus Malassezia.
- Scalp irritation: Anything that irritates and damages the skin can trigger dandruff, including pool chemicals, hot showers, scalp sun exposure, and the drying effect of heavy air conditioning.
- Stress: Psychological stress affects your skin health and leaves you susceptible to dandruff.
How to Prevent Dandruff
Below, you will find expert tips on preventing dandruff by taking proper care of your scalp and choosing the right products for hair and scalp care.
Maintaining a Healthy Scalp
Your scalp health plays a major role in determining your hair's health. Your scalp contains follicles, which are the openings your hair grows from. Follicles produce oil that moisturises the scalp and protects the skin from infection. A disruption in the scalp's microbiome can cause dandruff, hair breakage, and changes in hair texture. Caring for your scalp keeps its microbiome balanced and helps reduce the occurrence of dandruff.
Avoid washing your hair too often to prevent stripping your hair of its natural oils. That said, in hot and humid conditions, sweat and oil can accumulate more quickly on the scalp, so you may need to wash more frequently than you would in a cooler climate. Conversely, too much washing makes the hair produce excessive oils to compensate, resulting in oily hair.
When it comes to diet, certain minerals and vitamins are essential in maintaining healthy hair and skin. Vitamin B7 boosts keratin production for skin, hair, and nail growth. Vitamin B6 regulates the production of sebum to moisturise the scalp. Anti-dandruff diets rich in these nutrients include fatty fish, eggs, leafy greens, garlic, and poultry.
Proper Hair Washing Techniques
Applying proper techniques when washing your hair prevents damage to the hair follicles and the scalp. Even the water you use impacts the results. Hard water, which is common in many parts of the GCC, contains mineral buildup such as magnesium and calcium that can accumulate on your hair and dry it out. When washing your hair, consider using softened water where possible and following these steps:
- Wet your hair to open up the cuticles and ease the absorption of conditioner later.
- Apply your shampoo to the entire scalp, crown, and hair, through the ends to cleanse.
- Massage the scalp gently for about three minutes. Avoid harsh circular or back-and-forth movements to avoid tangling the hair follicles or excessive hair fallout.
- Rinse your hair thoroughly for one or two minutes. If you have dry hair, try rinsing it with cold water to keep it strong and healthy.
- Apply conditioner from the mid-shaft to the ends of your hair, and rinse again after two to three minutes.
- Rinse again and dry your hair using a towel by squeezing or patting. Rubbing the hair excessively with a towel can cause tangles and fallout.