Eeeeeewwww. If you like gross, you will love this movie. If the sound of people chewing and the squishy noises of a puss pocket grosses you out- you may want to skip it. Although the concept of a beautiful woman desperate to do anything to look younger & more beautiful is not a new one, this was an original take. The movie started out so good but the ending gets too weird and gross and just goes too far. The ending ruined it for me, I was a little bummed (I had high hopes). Demi was brilliant, a front runner for the Oscar. 3 watch checks, I think Ryan would stay awake for this one, it’s pretty hard to look away. You can definitely rent it. 
The Substance
Manda's MovieWatch 