After a particularly bad breakout last year, I realized the cause might be hiding in my makeup brushes. I googled around to find the best brush cleaner, but ended up discovering an at-home wash. I already had all three ingredients (dish soap, olive oil, and water) so I decided to give it a whirl. I've been hooked ever since. The dish soap kills germs and cleans the hairs but can also dry them out. To balance the harsh side effects, add equal parts olive oil. It acts as a conditioner to keep the bristles soft and smooth. Enjoy!