Tutorial on how & why to properly clean your makeup brushes. (a tablespoon of white vinegar in a cup of hot water, and a 20 minute soak, followed by a hot, then cold rinse and pat dry will do it. Disinfects, dissolves grease/makeup, leaves no film, and inexpensive.)
Will have to try this to see if it works: Headache/migraine? Submerge your feet and hands in hot/warm water and put a bag of frozen peas at the base of your skull. The heat on your extremities pulls the blood from your head relieving some/all of your headache.