I have been using this based upon your recommendation to Crystal - and it's now been a month. I am LOVING it! It not only helps support the skin issues, but for Marcel it's making his coat soft and more silky - which is amazing given his coat is so fine, a bit drier, and VERY prone to tangling due to texture. Allerderm really does amazing things for his coat.
I get mine on ebay for about $21, but saw it on Amazon for a good price too.
GREAT STUFF, thanks for discovering it and sharing about it!