Take one cup of warm water and mix in one tablespoon of salt then rinse around the area the cyst or cysts are at this will cause the size to decrease. Also you may want to see a dentist or dermetoligist of some type.
A boil is the body's immune system being down. Several reasons for that diet, lack of exercise and low self esteem or stress or a combination of them. Less carbs especially high Glysemic types. Walk...
Watch your diet. Eat healthy unprocessed foods. Do not eat fast food of any kind.
Also, wash your pillow case very often. As often as possible.
Wash your face gently before going to bed and again...