My boyfriend does not use conditioner. (Because he is a guy, right? Guys don't use conditioner, maybe?)
And at the store I can only find 2 conditioners for ever brand. (Imagine 10 Pantene shampoos and 1 or 2 Pantene conditioners)
I go to the beauty supply store (to use a credit I had) and I try to buy nice, salon quality shampoo and conditioner. Ok for shampoo, but no regular, daily-use conditioners. They have hair masks and hair treatments, but no "after shampoo". The owner asks me if I have particularly dry hair. I start making excuses for why my hair doesn’t look like I spent more than 2 minutes fixing it. Finally, he finds something that seems like what I want.
But it's not. When I get home and try it, it leaves my hair humid and kind of sticky tacky. This stuff is not conditioner. It's a "seriously damaged hair" mask.
Conclusion: I don’t think French people use conditioner