Wren is not a winner
I purchased Wren last month and I was not pleased with the results. It did not do what it promised.
I did not notice a difference after my first washing (like promised) or after my 20th washing. I was talking with a friend and told her about my dissapointment with Wren, she recommended "Simply U" (Sulfate & Paraben Free) shampoo and conditioner (in my case, for color treated hair). I tried it and liked the results much better than what Wren did or should I say didn't do to my hair. I noticed a difference using "Simply U" by the second washing.
I would recommend trying "Simply U". You can find it at Walmart at a more reasonable price.