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Why does my hair have dandruff? Dandruff is the most common scalp condition in the United States. It affects about half of all people at some point in their lives, but it’s not always easy to diagnose or identify. In most cases, dandruff is just a mild case of dry skin on your head—but some other causes can cause more severe symptoms.

What is dandruff?

Dandruff is a scalp infection caused by an overgrowth of yeast. The most common causes are:
• Dry skin
• Too much washing (or not enough shampooing)
• Using shampoos with strong fragrances and dyes

Hair care practices that can cause dandruff

Several different hair care practices can cause dandruff. Some of these include:
• Overwashing your hair – If you wash too often or use harsh products, your scalp may become irritated and susceptible to dandruff.
• Using an electric blow dryer on wet hair without using a heat protectant spray first – The heat from the blow dryer can irritate the scalp, which is often what triggers dandruff in the first place!
• Using styling gel or hairspray on damp strands as opposed to when they’re dry (which helps prevent clumps) – This applies if you do not have curly/wavy texture since it will help hold up those curls better than simply letting them hang freely during styling time – however, this does require a few tries before learning how much product should be used based upon whether its application was necessary.


Dandruff also stems from dehydration. Here are some tips to prevent dehydration:
• Drink more water.
• Don’t drink too much caffeine or alcohol.
• Lessen your intake of salty foods.

Diet and nutrients

Dandruff is caused by an imbalance in the scalp, which a dietary deficiency or excess can cause. The most common nutrients that are deficient include zinc and selenium. Zinc helps to strengthen hair follicles and prevent them from falling out; in addition, it reduces inflammation throughout the body including your scalp. Selenium is another important nutrient because it helps maintain healthy skin cells as well as immune function. So if you’re looking for ways to prevent dandruff from recurring in your life, try adding some zinc-rich foods to your diet.


Dry weather affects your skin including your scalp. The drier your hair, the more likely it is to become dandruff-prone. During this weather, try using sulfate-free shampoo to prevent further dryness of the scalp.

Medical Condition

  • Seborrhoea – this condition causes oily build-ups on your scalp that give rise to flakes of dead skin cells (dandruff). It’s usually caused by an imbalance between skin oils called sebum and sweat glands that produce too much oil for normal reasons (like PMS or pregnancy).

  • Scalp psoriasis – this type of psoriasis is similar to eczema because it involves inflammation instead of just scaling up from baseboards; however, there are some differences between these two conditions including how they affect hair growth overall: while eczematous lesions can cause baldness at times because they cause loss/damage as well as itching due largely only being limited areas within contact with topical medications such as corticosteroids which aid healing but also sometimes cause side effects like headaches etcetera.

Why does my hair have dandruff all of the sudden?

Dandruff is a common problem that causes discomfort and insecurity. It can be hard to know what’s causing your scalp to itch and flake. You might think it’s just some sort of dry skin or maybe even that you’ve shampooed too much, but many other things can cause dandruff. In this article, we will feed you some factors that may be responsible for your sudden dandruff, so you to quickly aid your itch!

Dry skin and scalp

Dandruff is a common condition that can affect the scalp and hair. It’s caused by dry skin, which leads to flaky scales on your scalp. This can be caused by sun exposure or drying shampoos as well as over-washing your hair or using harsh perfumed products that strip moisture from your scalp.

The best way to prevent dandruff is to keep up with regular shampooing and conditioning routines—as recommended, you should never use store-bought dandruff remedies unless you have been medically diagnosed with the condition (if so, consult with a doctor).


One of the most common reasons for sudden dandruff is that you’re over-shampooing! What happens is that the scalp becomes dry and irritated, which then triggers an overreaction of your body’s oil glands. You may notice that dandruff appears on the skin around your hairline as well as on other areas like behind your ears and neck (or anywhere else).

The best way to treat this problem is by limiting how often you shampoo—maybe even once or twice a week if possible! If you’re having trouble doing so, consider using an oil-free shampoo instead of one with sulfates since these can dry out your scalp even more than regular shampoos do.

If nothing seems to help anymore despite following all these tips then maybe it’s time for some professional help from a specialist.

Yeast Infection

Dandruff is a yeast infection. Yeast is present on most people’s skin and hair—it’s what causes some people to have a mild case of athlete’s foot; it thrives mostly in warm, moist environments.

The problem with dandruff isn’t that you’ve got too much of this fungus on your scalp (the sebaceous glands produce oil for it), but rather that you have too much yeast in your bloodstream. This can occur when there are other symptoms present such as dryness or flaking (which indicate dry skin), or if you have recently been exposed to antibiotics or antifungals like ketoconazole (Nizoral).

Other common causes

Many other things can cause dandruff, here are other factors that may lead to your sudden dandruff:

• You’re getting older – As you age, your hair becomes thinner and less able to retain moisture. This is why it’s so important to use moisturizing products on your scalp regularly!
• You have an infection in your body – If you’ve had a cold or flu recently then this could be causing some irritation of the skin that leads to dandruff. Try taking some time off work until things clear up!
• You’re taking medication for another condition – Something else in addition to just age may be making your scalp produce more oil than usual (like certain medications). If this is your case, see if switching medications would help reduce symptoms without having any negative side effects on other parts of your body.

How do I prevent dandruff from forming on my scalp?

Dandruff is a very common hair problem. It is a recurring problem for many individuals around the globe. Just like how its root cause can be hard to identify, it can also be hard to treat. If you are battling with this annoying condition, worry no more as we provide you with some tips to help relieve and get rid of your dandruff! Here are 5 tips on how to stop getting dandruff:

Don’t shampoo too often

Regular shampooing can dry out your hair, which may cause dandruff. Shampooing too much can strip your hair of natural oils and lead to dryness and breakage. Most shampoos contain alcohol which is not an ideal ingredient for your hair care as it also strips away essential oils from the scalp that are necessary for healthy-looking locks (and a healthier body).

Wash and massage your scalp

When washing your hair, use a mild shampoo such as Pantene Pro-V or Suave Professionals which does not contain sulfates. Sulfates strip the natural oils out of your hair and can irritate the skin on the scalp. Massage your hair in circular motions while gently washing with lukewarm water (or cool if you have sensitive skin). Don’t scrub too hard as you don’t want to strip away precious moisture from your tresses!

If you’re worried about dandruff forming again soon after starting this treatment method, consider starting at smaller areas on your head instead of tackling everything at once. Doing so will make it easier for you to notice any new signs of flakiness when they appear later on.

Use a gentle cleanser

If you have sensitive skin, look for products that are free of sulfates and parabens. As mentioned, sulfates can irritate your scalp and cause dandruff. Avoid alcohol-based shampoos as well because they dry out the scalp and irritate it. Look for products with no dyes, fragrances, or other chemicals on the ingredients list (this includes conditioners).

You should also avoid any product other than a shampoo that contains alcohol in its ingredients because it dries out your hair over time, causing breakage and scalp problems. Look for one that is pH balanced instead. If you want to help prevent breakage in your strands then it’s important to find something that’s not too harsh on them either!

Rinse with cool water

Dandruff thrives in warm, moist environments, so changing your shampoo for hot or cold is a good way to help fight off dandruff. If you’ve tried other methods and haven’t had any luck yet, try this one! Don’t use hot water either—it can dry out your scalp and make it more susceptible to irritation. If you want some extra heat on those dried-out follicles, try using lukewarm instead of scalding-hot water when rinsing away excess oils from your hair.

Avoid styling products with harsh ingredients

Avoid styling products with harsh ingredients. When shopping for new hair styling products, choose your options wisely and make sure to check the list of ingredients first. Avoid styling products containing ingredients such as alcohol or silicones, fragrance, dyes, and mineral oil. Only use shampoos that are free of lanolin (from sheep’s wool) and parabens.

The best way to keep dandruff at bay is by following these tips. It’s important not to shampoo too often and always use a gentle cleanser when you do wash your hair. The more often you wash it, the more likely it will be dry or frizzy, so try using conditioner instead if possible. Also, remember that styling products like gel or wax will make your scalp more oily which can lead to flaking as well.


There are varying factors that cause your sudden dandruff. It is important that you properly treat your dandruff to avoid it from worsening over time. If it’s only a mild case, then you may not need any treatment at all. But if you’re suffering from more serious symptoms like itching and flakes that cover your entire scalp or face area then going to see a doctor who can prescribe you some medication to help clear up this problem is recommended. Knowing signs of dandruff is a must as it can be quite a cause of discomfort. You should also know how to prevent or treat dandruff by following some simple steps. There are also some products available at health stores that can help you get rid of this problem.

Planning to do more for your hair? Check out this article for the best hair and scalp treatment or learn more about hair care here.


Sophia is a seasoned beauty and lifestyle writer with over six years of experience in the industry. With a keen eye for the latest trends and a passion for everything hair-related, she has been delivering insightful, engaging content to readers worldwide. Driven by a belief that everyone deserves to feel confident in their own skin (and hair!), Sophia is committed to breaking down complex beauty jargon and offering practical, easy-to-understand advice. When not immersed in writing or trying out the latest hair care products, she can be found exploring nature, reading books, or spending time with her beloved family.

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