A journalist asked Noomi Rapace how much she would do to change for a part. "I said that I would easily gain weight or shave my head. In Daisy Diamond I let all my body hair grow out. But he didn't believe me: 'what, that was your real hair?' I didn't understand what he meant. I thought that was obvious. Afterwards I realized that there are special wigmakers who make mini wigs for, well, pubic hair and armpit hair. You shave your real hair and glue on the fake stuff."- Rapace said.
During the porno shoot scene, they used a real porn actress Annika Amour for the role who performed unsimulated sex on screen.
It has been long speculated that an actual baby was abused and mishandled for dramatic purposes in the film. However, none of the production members or the actors have responded to the matter.