First of all thanks for this great post. by Generic T-Gel do you mean these ones ? :
http://amzn.com/B00IZAH67W
http://amzn.com/B000052XZZ
are they SLS free ?
recently I've found this one: Pura D'or. It is SLS free and includes argan oil. What do you think about about it ? is it good for...