The original length of the film was 94 Minutes. Some scenes and takes from the original movie were cut. New scenes or takes were filmed and added.  The Uncensored Version (with the alternate scenes and takes) still exists and was shown at a George Cukor retrospective in spring 2004 London/England.

The Uncensored Version does contain the following scenes and takes:

Pyjama-scene

The first difference is visible in the scene after Larry (M. Douglas) and Karen (G. Garbo) got married. They return to their chalet where they find R.Young and R.Gordon. Then we see the famous screaming scene of Griselda and Larry goes up to the room to join his wife. When she asks for her pyjamas, this scene is slightly different. In the uncensored version we see her hand suggestively coming out of the bathroom. She picks up the top form of her pyjamas.

More glamorous

The second and more important significant difference occurs after Karen appears in New York. Miss Elli (R. Gordon) is advising Karen (Garbo) how to look more glamorous. This scene had to be rewritten five times. I t was: Karin makes an unexpected appearance at her husband's office. In it, Karin sees a magazine article about Lawrence's old flame. A photo caption reads: Griselda Vaughn-Youth-Beauty-Achievement!  “Is that all?” Karin asks. “The other things you couldn't put into a caption,” replies Miss Ellis. “If this is what's wanted I think I can supply it . Elegance? Well, I'll be elegant. Chic? Well, why shouldn't I be chic? Perhaps I was stupid to try to change better. What did you say her dressmaker's name was? Or didn't you?” says Karin.

Broadway theatre

She than goes to the Broadway theatre to surprise her husband and finds him with Griselda. When the rehearsal ends she actually sees them kissing and cries. (where as in the censored version we do not see the kiss).

No telephone scene

There is no telephone scene of course. The telephone scene where Larry at the nightclub scene calls Snow Lodge. Than he finds out that his wife has left for New York. This Scene is not in.

Confrontation with Griselda

The confrontation in the powder room with Griselda is shot differently. The dialogues are pretty much the same. Those are different shots and angles, the voice delivery is different. It was obviously re-shot for the censored version.

Sensual kiss in the Hotel room

Next, after the “chica-choca” scene when she goes with Douglas to her hotel room. The moment where she says: "Not even a sisterly kiss". He approaches and says: "You are Karen". In the uncensored version, she says slyly: "You think so?" and gives him a real sensual kiss which of course is missing from the censored version.

More provocative in the Hotel room

In the same scene, after she puts on her "serious" costume, Garbo is far more provocative. (the way she lies down on the sofa, stretches her legs) It is really much more sensual and suggestive than in the censored version. Some of the lines are different, different close-ups etc. It was obvious that the scene was re-shot for the censored version. The same goes for Karen's second visit at Larry's apartment.

Griselda in Snow Lodge

Many of Griseldas (C. Bennett) scenes in the films third Act were cut. A scene of the original ending had Griselda being lost in the snow. This was making Larry realize that he has loved Karin all along. Reunion scene at Snow Lodge. The reunion scene at Snow Lodge between Garbo and Larry is very different. In the uncensored version we first see Douglas at the chalet. Actually rehearsing a speech of a break-up. It was something like: "Dear Karen, I think we made a mistake and must put and end to our marriage and so on." Then we see her and she is actually doing the same thing something like: "Dear Larry our marriage was a mistake and we must put and end to it." It is really a wholly different scene concept. The two are there to admit that they made a mistake. Larry does not yet know that his wife is also the twin sister who has seduced him. Then he comes down and they end up sleeping together. In the morning when he wakes up, he sees her still asleep. He looks at her feet and realises that he is dealing with the same person.

Pictures from the "Uncensored Two-Faced Woman"
  

After her arrival in New York, Karen went to Larry Blake's Office and after some talk Miss Elli is advising Karen how to look more glamorous. This scene was cut.

Roland Young and Garbo worked well together in the film, but we will never know how well they worked in this scene; it was cut to make the film play better.

 

Many other scenes were edited or cut out.

More info  HERE!