대용량으로 샴푸 등이 제공되면 '무료'처럼 생각해 잔뜩 가져가는 고객이 있을 것이라는 의견도 있었다.
There was also an opinion that if a large amount of shampoo is provided, there will be customers who think that it is "free" and take a lot of it.