"Beauty is in the eye of the beholder" means "different people have different opinions about what or who is beautiful". Example: It’s true that beauty is in the eye of the beholder. I haven’t found any of Mary’s boyfriends attractive.
"Money laundering" means "concealing the source of illegally gotten money so that it is believed to be legitimate". Example: One of the clubs downtown was shut down last week on charges of suspected money laundering.