"I saw that somebody had posted about something similar happening, and they made breast milk soap, and I thought, 'Oh, I should try that out,'" she said. She tried several different recipes and through trial and error finally found one she liked. "The awesome thing about breast milk soap is that you can use breast milk that is expired in your freezer, that you can no longer feed the baby, because it doesn't lose its benefits for skin if it's expired," Eddy explained.