Wheat Protein

Hey gang I was have been doing a lot of research on the ingredients in shampoos and conditioner. The very expensive ones all have wheat protein in them. I can not afford many of them and thought that it may be a good idea to made  my own wheat protein and then add it to my favorite shampoo and condtioner. Does anyone know how to make wheat protein? Or has anyone ever tried to add wheat protein to a product and if so what were the results?

Tresemme' does have wheat protein. I use the Vitamin E Moisture rich poo & cond. and like them. I got my last purch at Target - 1.18Liter (25% more bottle) for about 2.98 on sale.