I have used Wen for many years and never had a problem until about a year ago when my scalp began feeling like I had sunburn. It go worse and worse to the point that my entire head was actually sore.
It did not occur to me that the Wen could be the cause because I had used it for so long, until quite by accident I came upon a site like this while looking for a review of something else and began reading about the same issues I was having.
I stopped using it and the soreness and burning went away. It's a shame that this happened because I really liked the product.
Product or Service Mentioned: Wen Hair Care.
Reason of review: Bad quality.