Tutorial on how to properly clean your makeup brushes. (T of white vinegar in a cup of hot water, 20 minute soak; hot then cold rinse and pat dry.) Disinfects, dissolves grease/makeup, leaves no film, and inexpensive.
DIY tooth whitening: Mix a tiny bit of toothpaste with 1 tsp baking soda & tsp water. Brush teeth for 2 minutes. Do this once a week until you reach desired results. From then on, use the treatment once every month or two.