I believe Master Lin mentioned that Breathing of the universe if great for skin conditions.
Before starting your exercises, ask for the condition to be healed.
Visualization and possibly certain colors can be employed.
I believe Master Lin told me in person that skin conditions were result of blockages in the Lungs ... if memory serves me right.
Some of the guru's on the forum can definately add to this ... give them some time, they show up.
Love and Light,
Michael