All skin issues stem from the weak liver. So first things is to do Liver Flush and then go on a diet that includes a lot of green vegetables. Take liver function enhancing herbs. Many posts here on CZ should give you a list of those herbs. Iodine is important and needs o be taken for your thyroid function daily. 2-5 drops a day depending in the strength and your thyroid function.
If liver is clean and does good cleaning of blood your skin will not have to do the cleaning job. Also eat before sun down so your liver gets good time to clean your body at night time.