I do rotate my combing conditioners (I also rotate my rinsing conditioners as well). What I usually do is I have about three favorite combing conditioners. Usually there is one conditioner that's my favorite, and I have another two that I'm either experimenting with, or is my second favorite. One week I use my favorite, then the next week I use one of my other ones, such as a conditioner I'm trying out for the site. Then on the third week, I go back to my favorite, and on the fourth week, I use my second favorite conditioner, or another trial conditioner.

I rotate products for two reasons. The first reason is for some reason, if I use a conditioner two weeks in a row (even if it's my favorite conditioner ever), my hair doesn't seem as happy the second week I use it. I'm not sure why, but if I use my favorite conditioner every other week, my hair is just as glossy as ever. It isn't a big difference, and it's hard to put my finger exactly on what the problem is, so it could very well be all in my head. But since it doesn't hurt anything to rotate products, that's what I do.

The second reason I rotate products is for a semi-logical reason that I decided to do back in the days when I didn't know much about ingredients. Though I tried to get information on ingredients, I found I couldn't always get all the information on all the ingredients in a conditioner. So since I had no way of telling if a conditioner I was leaving in my hair might have a bad ingredient in it, to hedge my bets, I began rotating. That way I wouldn't be putting in a bad ingredient in my hair week after week. Also, if there was a different bad ingredient in each product, because I was rotating, there wouldn't be a cumulative effect of any of them because I was rotating.

Okay, I guess there's sort of a third reason I rotate. It's become a habit to rotate my shampoos and conditioners. I simply feel better doing it, and I feel weird when I use the same product twice in a row.