Just don't start, go to a real dermatologist. Much cheaper. I explained to the company that the Rx was too strong. On the lowest dose, it still made my skin break out. I mixed it with some lotion and it worked great. I saw some improvement in my dark spots. I also get skin treatments, and I can't use retinol 2 weeks out of that month every 3 months. This makes me use less. You can only skip two months with their product. I have SO many bottles that are expiring, it is a WASTE of money. They will not help you with your individual needs, so why is this a prescription? If this were a doctor's office, why would they prescribe you more "medicine" than you need? This company should not be able to claim they have a dermatology or write a prescription if they don't meet the individual needs of the patient and over-prescribe just to make money.