Has anyone used this? My DD started using it on Oct 25th. The dermatologist did say it can take up to 12 weeks to work and it has only been one month. Unfortunately, her acne has gotten ten times worse. I don't remember her saying it would get worse before it gets better, so I am wondering if this is the norm? The doctor is only in on Wednesdays so I will call then and ask, but in the meantime, I thought I would ask here.