Why Do You Buy Shampoo and Conditioner as a Set? (poll 5562257)

Why Do You Buy Shampoo and Conditioner as a Set?

They are designed to compliment each other, so they work better as a pair!

There's usually a discount if you buy a set

I don't really know why, just habit or something else

I don't buy shampoo and conditioner as a set

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See this poll on: https://poll.fm/5562257/embed