Cyst was popped , how did i keep it clean from getting infected?

Petroleum jelly: Where and how big was this cyst? How was it popped? For a small lesion i suggest washing the area with non irritating soap and warm water. Be sure there is no dirt or debris inside the lesion. After cleaning, coat the area with a cream such as petroleum jelly or neosporin. Try not to bandage as this well help the wound heal quicker.