Cassin said:I have been using thickening shampoo for a long time and its no problem.
The thickening shampoos I know about works by coating the hair. The effect of this is said to somehow vary, depending on what type of hair you have. If these have minimal effect on you, you can try leave in conditioners with the thickening effect. When you don't have to wash it out like you do with a shampoo, the thickening/coating effect will be better.What is it doing that thickens it or makes it appear thicker? Also, can you eventually use it so much that your hair grows to be unresponsive to it?