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.)
To get rid of the nasty black gunk in your drain: 1. Boil a pot of water. 2. Meanwhile pour baking soda down the drain. 3. Once the water has reached a rolling boil pour it down the drain. 4. Let the water and baking soda work at decomposing and sterilizing the grime for 10 minutes. 5. After 10 minutes, pour 1 cup of bleach down the drain to completely kill any remaining mildew or bacteria. this process every few months. It will also keep the nasty mildew smell at bay.