abscess boil help

Rebecca • Married to my high school sweetheart. Currently have 2 children Xavier Cole and Mariah Nicole.
So my daughter keeps getting abscessed books on her butt. She recently had one that kept coming up and going away and they finally had to lance it. Now she has another one!! It hasn't even been a month since she had the last one lanced. This one is in a different location on her butt, but still on her butt. Does anyone know what to do to prevent it? I keep her as dry as possible already and that's all the dr keeps telling me.