Nose hair whitening is mainly related to malnutrition, physiological reasons, bad habits, drug factors, diseases and so on. 1. malnutrition: long-term diet can cause the body lack of folic acid, pantothenic acid, vitamins and other elements, the lack of these trace elements can easily cause hair whitening, often accompanied by dry skin, erythema, pigmentation and other symptoms. 2. Physiological reasons: with the gradual growth of age, the body undergoes physiological degradation, the hair will change from black to white, including nose hair can also become white. This is a normal physiological phenomenon and does not require special treatment. 3. Bad habits: If you often have excessive late night, mental stress, anxiety and other bad habits in daily life, it can lead to endocrine disorders, hair nutritional vascular spasm, melanin dysfunction, which can lead to the whitening of the nose hair. 4. drug factors: if you take a recent over the adrenaline and catecholamines and other drugs, can affect the blood flow in the body, resulting in a decline in the function of the hair follicles, can not synthesize melanin in time, resulting in the nose hair white. In addition, albinism, vitiligo, etc., can also appear nose hair whitening. If the nose hairs become white, you need to go to the hospital in time to check the specific cause and treatment, so as not to delay the condition.