Red blood on the nose, also known as nasal capillary dilation, is caused by trichomonas infection, alcoholism, spicy food habits, high temperature and cold stimulation, digestive and endocrine dysfunction. In addition, long-term mental tension can also induce nasal capillary dilation. The key to the treatment of nasal red blood cells is to ensure the normal microcirculation of the body, often massage the red blood cells to promote blood circulation and enhance capillary elasticity; diet should be light, pay attention to avoid stimulating food, alcohol should be prohibited; avoid excessive cold and heat stimulation and emotional excitement. B vitamins can be taken appropriately. In addition, laser treatment for red blood cells can also improve the symptoms of vasodilation more quickly. Is there any way to lighten the melanosis on the nose? The skin of the nose, like the skin of other parts of the body, can develop hyperpigmentation. Its causes are many, some are congenital pigmentation, such as freckles, coffee spots, etc.; some are pigmented scar formed after trauma; and some are part of melasma. Therefore, it is better to clarify which kind of pigmentation before treatment. If it is congenital pigmentation or pigmented scar caused by trauma, laser-based treatment can be used to make the pigmentation lighter, break up and decompose the diseased pigment cells, and let normal pigment cells replace the diseased pigment cells. If it is part of melasma, internal medication and external depigmentation creams are needed, supplemented with low-energy laser treatment to lighten the pigment. Of course, always paying attention to sun protection is the main way to prevent pigmentation deepening.