I wonder if there are certain ingredients that makes a product stripping for one person and not another.
It isn't just the use of sulfates because I can use some sulfate shampoos. And there are many non-sulfate shampoos I can't use at all.
I know someone mentioned to me that the use of coco-betaine ? worked well in their shampoos. I think I have found that as well. I wonder if this same ingredient causes issues for other people.