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What are the main causes of Dandruff?

Dandruff, a harmless, chronic condition, occurs when the scalp is dry or oily and produces thin patches of dead skin. These little white scales dot the hair and fall like snow on the shoulders. 

Although harmless, dandruff can be bothersome. They often appear between the ages of 10 or 20 and affect up to 40% of people over 30. 

What is dandruff caused by?  

There are several types with different causes. What are they and how to treat them? Answers from a dermatologist. 

Do you feel like your scalp is literally peeling? Is dandruff strewn on your shoulders ruining your life? Although very annoying, this desquamation is generally benign. However, it happens that it really is a pathology and requires appropriate treatment. 

What are the different types of Dandruff? 

The most common dandruff is pityriasis, a condition caused by a fungus that colonizes the scalp and disrupts its cell renewal system. Indeed, the skin of the skull permanently eliminates dead cells to produce new ones (as for all skin areas). Under the effect of pityriasis, the process tends to accelerate. The dead cells clump together and accumulate in the form of scales. Result: unsightly flakes on your shoulders. 

Does hot water cause dandruff? 

The hot water allows your shampoo to remove more easily grease, dirt and dust that accumulate and dirty scalp. However, do not risk increasing the temperature too much: water that is too hot can irritate or even damage your scalp. 

Local infection with Staphylococcus aureus can also suggest the presence of ringworms, without this being the case. This is why it is imperative to consult a dermatologist in the event of the appearance of oily and yellowish dandruff. 

Psoriasis (an autoimmune disease) is the excessive activity of the body's defense systems. Psoriasis and has an exaggerated response to environmental insults. The cells of the epidermis renewing themselves in too large a quantity, they cause excessive desquamation. On the scalp, the phenomenon, therefore, manifests itself in the form of dandruff. 

Does food cause dandruff? 

The most cited link between diet and dandruff is due to the yeast Malassezia. According to one theory, since dandruff is caused by yeast, eating yeast-based foods can make it worse. 

Internal causes of dandruff 

Stress - Infection, fever - Hormonal imbalance - In women: approaching menstruation and / or heavy menstruation - Excessive sweating - Digestive assimilation problems - Overly acidifying diet EXTERNAL FACTORS - Shampoos too aggressive for the scalp. 

Best dandruff treatment and prevention 

The diagnosis of dandruff is easy to do yourself: the scalp itches, it is dry and covered with scales. Seborrheic dermatitis is accompanied by reddish skin, a few yellowish and oily scales, and patches with indefinite contours. 

Although often chronic, dandruff can be treated. Try a non-medicated shampoo first, massaging the scalp vigorously and rinsing it well. Frequent application of shampoo removes dander, reduces the amount of oil, and prevents the build-up of dead skin cells. If there is no improvement, special anti-dandruff shampoos can give good results. The instructions for use depend on the shampoo used. Some are to be used daily, while others are used once or twice a week. 

Best products to use during dandruff 

When choosing an over-the-counter shampoo, look for anti-dandruff agents such as onion and caffeine. You may need Onion Caffeine Shampoo & Conditioner to help control dandruff, and try reducing the number of products you put in your hair (e.g., gels and sprays), or stop using them altogether and eat a balanced diet.