Left my scalp flakey
I purchased the 5 piece system and followed the directions exactly.  My hair was soft, but my scalp was extremely dry and flakey directly after drying it right out of the shower.  I've never experienced this before with any product, so that made me nervous.  I read message boards where people with similar results later experienced hair loss, so I immediately re-washed and deep conditioned my hair with different products.  The flakiness went away... Very odd experience.  I'm not sure which product in the 5-piece line was the culprit, but this ended up being a waste of $ for me.
Rating: 2 stars