I do think my scalp dislikes some conditioner ingredients, and that some can build up and cause problems.
My hair's really fine, and I find that I get along best if I DO condition, even if the conditioner is fairly light. I need any and all detangling assistance I can get.
Having said that, though, I did experiment last fall with varying levels of conditioning, and found that I could get away with less conditioning than I'd thought.
Bookmarks