Demi Moore says she 'felt safe' when shooting 'full frontal nudity' scene in new film

Demi Moore's newest flick is certainly in the X-rated category, making for a pretty awkward filming process.

The 61-year-old has featured in a lot of films at this point, subsequently boasting an impressive resume. And a lot of those films have been pretty saucy too, with Moore's latest movie certainly being no different.

The Substance released premiered at the 77th Cannes Film Festival on Sunday (19 May), with all of its cast in attendance.

An official synopsis for the flick reads: "Have you ever dreamed of a better version of yourself? You should try this new product: The Substance. It changed my life. With The Substance, you can generate another version of yourself: younger, more beautiful, more perfect… Just share the time.

Demi Moore at the Cannes Film Festival. (Mike Marsland/WireImage)

"One week for one, one week for the other. A perfect balance of seven days. Easy, isn’t it? If you follow the instructions, what could go wrong?"

With the film being premiered at the long-running film festival, its cast spoke to a lot of media in a press conference.

On Monday (20 May), Moore discussed the 'vulnerable experience' of shooting The Substance.

She told press: "Going into it, it was really spelled out — the level of vulnerability and rawness that was really required to tell the story.

"And it was a very vulnerable experience and just required a lot of sensitivity and a lot of conversation about what we were trying to accomplish."

Margaret Qualley also features in the movie - someone who Moore credits for feeling safe on set.

Moore stars in the film alongside Margaret Qualley. (Lionel Hahn/Getty Images)

"I had someone who was a great partner who I felt very safe with. We obviously were quite close — naked — and we also got a lot of levity in those moments at how absurd those certain situations were," she added to reporters.

"But ultimately. it’s just about really directing your communication and mutual trust."

The Substance is certainly a strange one, to the point where Moore's character transforms into a humpback abomination.

In the same press conference, Moore spoke about seeing herself in the prosthetics both on set and at the premiere screening during Cannes.

"It was very strange," she admitted, though there was one saving grace.

Moore says she 'felt safe' with her partner. (Samir Hussein/WireImage)

"My dog still recognized me. It was my touchstone of reality," the actor added.

The Substance certainly impressed at Cannes, with Variety reporting that the film was given an 11-minute standing ovation.

In fact, that was the longest of the fest.