Save a few dollars ladies, don't spend money on high end makeup brush cleaners, do it yourself! Follow these simple steps created by PopSugar.com
Step 1: Mix two parts antibacterial dish soap to one part of the extra-virgin olive oil on a clean plate (don't use paper plate, as the oil will seep through).
Step 2: Grab your first brush and wet it slightly with lukewarm water. Make sure the brush stays bristle-side down throughout the entire process. If water gets into the ferrule (the middle tube part that holds everything together) of the brush, it can loosen the glue, causing the bristles to fall out.
Step 3: Dip the damp brush into the soap mixture and coat it thoroughly. Next, work the mixture into the bristles using the palm of your hand and fingers. Continue until the soapy residue is makeup free.
Step 4: Rinse the brushes under lukewarm water until no soap runs from the bristles.
Step 5: Roll a dish towel like you would a yoga mat, and drape a paper towel over it so that most of the paper towel hangs off. (The paper towel should look like a slide coming down from the dish towel). Next, arrange the brush so the top of the handle sits on top of the towel, pitching the rest of the brush down onto the paper towel. This will allow your brushes to dry on a slant, while keeping moisture away from the ferrule.
Repeat with remaining brushes. Some make take two washings to get completely clean, depending on the amount of residue left behind. Allow them to dry overnight, and repeat about once a month.