![]() ![]() If the blood flow is poor, the nutrients and oxygen necessary for the scalp will not be distributed, and the scalp environment will deteriorate.If this condition continues, the barrier function of the scalp will deteriorate, making it more susceptible to external stimuli and causing dandruff. It is said that the sympathetic nervous system becomes dominant when stress is felt, and the parasympathetic nervous system becomes dominant when relaxed.These nerves act alternately to maintain balance, but when exposed to excessive stress, the sympathetic nerve continues to dominate.If you feel the sympathetic nerves, you will be placed in a tense state, and the blood vessels will contract and the blood flow will deteriorate. ![]() Malassezia fungi decompose sebum to produce fatty acids, which are said to be the cause of irritation of the scalp and adverse effects.For this reason, the turnover is disturbed and the scalp peels off faster than usual, increasing the amount of dandruff. Malassezia fungus is a resident skin bacterium that exists on everyone's skin and usually does not cause any harm.However, Malassezia fungus loves sebum, and when the amount of sebum secreted increases, it feeds on it and increases excessively. Let's take a look at the main causes of dandruff. ![]() It is said to be caused by the proliferation of fungi called Malassezia, which feeds on sebum, due to increased sebum secretion due to disordered lifestyles and the hot summer season when metabolism improves.Men are more likely to develop oily dandruff than women because men produce more sebum than women. Oily dandruff is the exact opposite of dry dandruff and is caused by excessive secretion of sebum from the scalp.Oily dandruff is characterized by its large size and stickiness. It is said that if the amount of sebum secreted from the scalp decreases, the turnover cycle will be accelerated, and the old keratin will peel off while it is still immature, making it finer.It is a symptom that is likely to occur in people with atopic dermatitis from the beginning and those with dry skin.Ī dry scalp is very sensitive and weak to external stimuli, and even a little irritation can easily cause itching and inflammation, which can lead to scalp problems other than dandruff, so be careful. dry dandruffĭry dandruff is dandruff caused by a dry scalp due to low sebum secretion.It is characterized by being dry, fine and powdery. Types of dandruffĭandruff is roughly divided into two types, each with slightly different characteristics. However, depending on the condition of the scalp, such as a bad scalp environment or dryness, dandruff can become noticeable as large dandruff occurs or increases. This turnover occurs naturally in everyone, so dandruff can happen to anyone.The reason why some people have conspicuous dandruff and others do not notice it is that dandruff is usually very small and does not stand out even if it falls off, and it is almost washed away when you wash your hair. Turnover is done so that the scalp is reborn as a new scalp like the face.In a cycle of about one month, the old scalp peels off and is reborn as a new scalp.This old scalp flakes off and becomes what is called dandruff.
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