If you shave your hair, you will still have dandruff. Dandruff is the small, grayish-white bran-like scales that are constantly shed on the scalp and are a product of scalp metabolism. Under normal circumstances, people have a certain amount of dandruff on their heads, but the scalp keratinocytes shed slowly and are not visibly visible. When influenced by other factors, the normal metabolism of the scalp may be disrupted and an increase in dandruff may occur. During the process of dandruff shedding, it is resisted by the hair and stuck in the hair, presenting a dandruff state. If you shave your hair, you are only reducing the intermediate load, so dandruff will still be present. If there is too much dandruff and causes itchy scalp and other discomfort, it is pathological and mainly related to the following reasons: 1. Scalp diseases: scalp inflammation due to bacterial or fungal infection or other physical or chemical injuries, certain skin diseases, such as seborrheic dermatitis and psoriasis, sometimes the only or typical symptom is scalp flaking; or allergies caused by hair dyes and shampoos, all of which may lead to dandruff increase; 2. Systemic diseases: if there is endocrine disorder, it will increase the activity of sebaceous glands and lead to the malfunction of scalp metabolism, which can cause dandruff to increase. In addition, gastrointestinal dysfunction, nutritional imbalance and lack of vitamins in the body can also lead to an increase in dandruff; 3. Other: excessive tension, irritability, exertion, anxiety and other emotions, as well as long-term consumption of spicy food, drinking alcohol, washing hair too often and using a more alkaline lotion may cause an increase in dandruff. If there is a small amount of dandruff, there is no need to interfere too much. When too much dandruff is produced, you should pay attention to the combination of work and rest, maintain a happy mood, and actively participate in physical exercise; eat more vegetables and fruits, keep the digestive tract functioning normally, and avoid or reduce the consumption of spicy food and wine; pay attention to the frequency of hair washing, and use neutral or slightly acidic boric acid soap, shampoo cream or medicinal shampoos that reduce dandruff to wash your hair, and avoid scratching your scalp when washing your hair. If the situation of excessive dandruff is still not relieved, you should go to the hospital in time to clarify the cause of the disease and take targeted medication.