Cotton underwear dries quickly and allows air to flow freely through the fabric. This prevents the development of damp conditions that promote the growth of yeast and unhealthy bacteria that might lead to an infection. You can also prevent these conditions by not wearing underwear. Underwear made from synthetic fabrics, silk, lace, or other materials doesn't breathe as well.  If you like wearing underwear made from fabrics other than cotton, make sure the section of the underwear that will be touching your vagina has a cotton liner. If you tend to get a lot of vaginal infections, try picking underwear made from organic, undyed cotton that hasn't been treated with any chemicals. Stretch pants, skinny jeans, and tights trap moisture against the skin and prevent airflow, often leading to yeast infections. Try wearing looser, lighter fabrics that breathe well. Go for skirts and dresses more often, and choose thigh-high tights instead of the kind that pull up around your waist. Pick out shorts that are on the looser side, too. Wearing a wet bathing suit or wet workout clothes for a few hours leaves you prone to getting a yeast infection. Make sure you change into clean, dry underwear as soon as possible after swimming or working out. You might even want to keep an extra pair on hand for unexpected situations when you might find yourself in need of a fresh pair.  If you decide to shave the area around your vagina, be very careful not to cut yourself with the razor. Use shaving cream (making sure not to let any get inside your vagina) and take your time shaving around the folds so you don't accidentally get hurt. Waxing is another option that many women choose. If you go this route, make sure you do some research and choose a reputable waxing salon that uses clean products and wax. Waxing salons with unsanitary practices can cause the spread of bacterial infections. When you have sex with a partner, you're opening yourself up to bacteria and other microscopic substances that can end up irritating your vagina and...

TL;DR in Indonesian:
Kenakan pakaian dalam berbahan katun. Kenakan pakaian yang longgar. Segera ganti pakaian yang basah. Cucilah daerah kewanitaan Anda setelah berhubungan seks. Buang air kecil setelah berhubungan seks. Cobalah gunakan kondom.