First, read the English article below.

Do your research to find a reputable piercing shop with trained, professional piercers. You can ask friends and family about the places they got their piercing done, and ask if they would recommend the place. You never want to skimp on the quality of the establishment or piercer you visit. The more professional the business and certified its employees, the less likely you’ll experience problems or infections with your piercing. An experienced piercer could also offer expert advice on sizing, jewelry, and other questions you might have while getting your piercing done.  Visiting a safe and reputable piercing shop will likely mean that the piercers use quality jewelry for their piercings. Quality piercing jewelry includes jewelry made from implant grade stainless steel, titanium, nickel-free 14-karat (or higher) solid white or yellow gold, and niobium just to name a few.  A professional piercer will also use a hollow needle to create your piercing rather than a needle gun. If any piercing shop wants to use a needle gun to create your piercing, you should look elsewhere. Needle guns can damage the skin significantly, and are more likely to cause infections. Wash your hands thoroughly with antibacterial soap and water before you touch your piercing with your fingers. Dirt and oils from your fingers can transfer to your piercing (which is an open wound), and potentially cause an infection. Try to make sure to use your nails to scrape out and remove any dirt from underneath your nails. Dirt from underneath your nails could also transfer to and infect your piercing as you touch it. Use a Q-Tip dipped in warm water to wipe and remove any built up crust from around the piercing site. Do this very gently, avoiding moving the jewelry around too much. Then, wash your piercing with antibacterial soap in the shower. Simply add a small amount of soap to your fingertips, and massage and lather the soap onto your piercing for about 20 seconds. Use the shower water to thoroughly rinse off the soap residue. Exit the shower and... 

Now, please write a short abstract for it in Vietnamese. Abstract:
Xỏ khuyên rốn ở cơ sở chuyên nghiệp. Đảm bảo tay phải sạch khi chăm sóc lỗ xỏ khuyên. Rửa lỗ xỏ khuyên hàng ngày. Rửa lỗ xỏ khuyên bằng nước muối. Uống vitamin.