1, sexual reasons: Because in sexual life, the labia is stimulated by external friction for a long time, leading to local pigmentation, and the melanin of hormones during sexual stimulation will also lead to the blackening of female labia. 2, congenital inheritance: some young women who have no pregnancy or sexual experience have dark labia, mainly genetic. 3. Normal pigmentation: The color of female genitalia is affected by its own melanin precipitation, and this pigmentation is also related to female hormones. The depth of this color varies from person to person and is related to the amount of pigment. Girls with whiter skin will appear attractive red and pink, while girls with darker skin will have deeper pigment in their labia. Experts from Meibang. com said that if you want the labia to become attractive pink, you might as well choose labia bleaching! Bleaching labia is a common private plastic surgery project at present. It uses a special tattooing needle to pierce a dye that is harmless to the human body into the dermis to restore the attractive color of the labia minora. After bleaching, the labia minora can remain unchanged for many years. For dark labia, regaining pink is the best choice. Bangmeiwang can help you make an appointment with major plastic surgery hospitals in China, and also provide preferential information for major plastic surgery hospitals, so that you can rest assured.