Hi boys I have had a sebaceous cyst on my cheeck for 2 weeks, and it didn't want to go away. I've tried Antibiotic cream, cortisone, and something else. Now it's 4 days I'm putting castor oil on the cyst, and it's working! The cyst is disappearing. The best is to have castor oil applied 24 hours a day,covered with a plaster, in any case wear it as many time as you can (also when you're sleeping). In a week it's all gone.