DIY Laundry Soap {Fels-Naptha & Borax Free}–Improved Recipe!

Name: DIY Laundry Soap {Improved Recipe}
Ingredients: 1 5- oz. bar Dr. Bronner's pure castile soap {any variety}; 1 c. washing soda; 1/4 c. Epsom salt; 2 tbsp. citric acid or Lemi Shine