From http://oilsandco.com/2017/01/24/they-see-me-rollin-diy-roller-recipes/:
Massage into chest for coughing and congestion.
+ 10 drops RC
+ 10 drops Lavender
+ 5 drops Peppermint
+ fill with coconut oil
Donna K. Fitch
Renaissance Soul, Octopus Outlook