I haven’t watch it yet but I have a feeling it’s similar to this.
Perfume is about a fat lady who was once a young beautiful lady about to go into modeling but unfortunately something happen so modeling wasn’t an option anymore. As she grew older she gain lots of weight. The husband kept fat shaming her until the point she wanted to die. Right before she was about to die she received this mystery package that had a perfume in it. She did a drop on her wrist to smell it and BAMN she was her young self again. So she decided to leave and rewrite pass again but not everything is permanent.