A friend of mine worked for a huge worldwide all natural cosmetic & hair care company & had mentioned one day at a training session the company educated them more on shampoos & directly used Wen as an example of an all natural product that doesn't work! They told her that it will cause hair loss!
They said there's a chemical that is necessary to keep the hair follicle pores from clogging up. Without it the scalp will close the follicle pore & the hair will fall out! That was in 2013!!!
How is it that a company who also specializes in the same area can give these warnings years ago and people will claim that there's no scientific proof. Some research had to be done for the training course to mention this!