Rain

The story is about a woman who ends up in a story. To avoid all the crazy men in the story she uses her make-up bag (the thing she brought from her previous life) to make herself look in a way that people find ugly. She ends up in a mansion with an “ugly” man and an “ugly” child. She helps them by using make-up on them.

I’ve read it before but I don’t remember the name. A picture from it can be found here https://www.mangago.zone/read-manga/badass/uu/to_chapter-9.5/pg-1/