The dazzling array of black sesame foods on the market has become a must-have for many people's health. Especially the saying 'eating black sesame seeds to nourish hair' has aroused people's expectation of 'reversing white hair'. However, eating black sesame seeds cannot save white hair. The hair color is determined by the melanocytes in the hair follicle. Under normal circumstances, melanocytes in hair follicles secrete melanin (true melanin, brown melanin), which can cause hair to appear in different colors such as black and brown. This secretion function is influenced by factors such as genetics, stress, aging, disease, and nutritional status, and the depth of hair color varies among individuals. Under the influence of the above factors, the function of melanocytes will be damaged, degraded, or dead to varying degrees, leading to hair whitening. Once hair follicles stop producing melanin, hair whitening becomes irreversible. From this, it can be seen that the key to melanin production in hair is the function of hair follicles. If the melanocytes in the hair follicle are only damaged and not dead, hair color can be restored by supplementing nutrition; Once the melanocytes in the hair follicle die, melanin will no longer be produced. Black sesame does have a nourishing effect on hair. Sesame has rich nutritional value, especially black sesame, which is rich in protein, unsaturated fatty acids, vitamin E, B vitamins, as well as minerals such as calcium, iron, zinc, and copper. Vitamin E has antioxidant properties and can delay hair follicle aging; Copper and iron participate in melanin synthesis in synergy with other nutrients; Unsaturated fatty acids and proteins provide nutrition for hair, improving dryness, fragility, and other issues. Therefore, moderate consumption of black sesame seeds can assist in improving hair shine and toughness. It is difficult to reverse white hair by eating black sesame seeds. Although eating black sesame seeds can nourish hair, it cannot regenerate the already declining and dead melanocytes, and therefore cannot reverse white hair. The causes of white hair are complex, and a single food cannot solve fundamental problems such as genetics and aging. To avoid premature white hair, it is important to maintain a balanced diet, especially paying attention to the balanced intake of protein, vitamins, and minerals. At the same time, it is necessary to reduce hair damage, avoid frequent dyeing, sun exposure, excessive pulling, and also pay attention to reducing staying up late and relieving stress. If necessary, consult a professional doctor. (New Society)