Modern women seek a curvaceous figure, the most important of which is to have full, firm breasts. Perfect breasts should not only have perfect breast shape, volume and position, but also have normal nipples to match them. A normal nipple is located in the center of the breast, of moderate size, and protrudes from the surface of the breast skin. There is a nipple deformity that is not protruding from the areola plane, or even recessed below the surface of the breast, medically known as nipple invagination. Do you know how nipple invagination occurs, what are the dangers and how to treat it? Nipple invagination is a genetically related developmental deformity that is congenital and gradually becomes apparent as the breast develops. It is congenital and becomes obvious as the breast develops. It prevents the baby from breastfeeding normally. The incidence of breast cancer is higher in women who are not breastfeeding than in those who are breastfeeding; it is not uncommon to find cases of infection caused by the accumulation of dirt in the inverted nipples that cannot be easily cleaned. Therefore, women with inverted nipples should be treated as soon as possible. There are two main types of methods to correct nipple invagination, one is non-surgical and the other is surgical. The non-surgical treatment is to use the principle of mechanical traction or negative pressure suction to correct it and is only suitable for those with flat nipples and mild invagination. For those with severe nipple invagination, or those for whom non-surgical treatment is ineffective, surgical treatment is used. In the past, surgical treatment, in order to achieve the best results, all fibrous bundles and breast ducts had to be cut off, thus losing the breastfeeding function for women who require it. So, is there a method that can effectively correct nipple invagination without destroying the breastfeeding function? In 2001, we developed a nipple implant correction device. Through a simple minor surgery, it is installed on the surface of the invaginated nipple, and by using long-term sustained force, the invaginated nipple is gradually pulled out of the breast surface to correct the invagination. This method is suitable for any type of nipple invagination; it overcomes the shortcomings of non-surgical treatment because the traction force cannot be maintained for a long time and the effect is not exact, and it does not destroy the breast ducts and does not affect breastfeeding; it can also adjust the nipple diameter and convexity according to individual requirements. The treatment period is usually three months to six months. During the period of wearing this correction device, it does not affect the daily life and you can wear the tattoo bra normally.