The black nasal grooves on both sides of the nose may be caused by hyperpigmentation, blackheads, acne and other factors.
1. Hyperpigmentation: the nasal grooves on both sides of the nose are subjected to long-term friction, such as long-term glasses friction extrusion of the local, which can lead to an increase in melanin production in the nasal grooves on both sides of the local phenomenon of hyperpigmentation, thus appearing on both sides of the nose grooves of the black performance.
2. Blackheads and acne: the two sides of the nose at the nasal groove sebum secretion, easy to blackheads, acne, local hair follicle mouth can appear brown or black keratin plug, resulting in the two sides of the nose at the groove of the black.
The two sides of the nose grooves black, it is recommended to timely to the regular hospital, clear cause, in the professional doctor under the guidance of standardized treatment.