The facts are that poor makeup and beauty hygiene can cause viral and bacterial infections
Why would you cleanse and treat your skin with your daily beauty regime products, only to apply makeup with contaminated brushes or makeup? Many believe that just because your makeup brushes and tools are only touching your skin there would be no problem. But would you go years without washing your facial towel or body towel. Over time bacteria builds up and it is just as important to properly clean them.
Everytime you use your makeup you reintroduce germs and bacteria to your skin, eyes and lips. Skin irritation and blocked pores, leading to blackheads and breakouts are just some of the consequences of not cleaning your makeup brushes between each use. Your skin health is impirtant particularly so if you suffer from acne or have sensitive skin.
Your face will last you a life time, you need to make sure you are not putting bacteria in and around sensitive eyes, into / around your mouth, sensative skin which is more semi-permeable and thinner than the body skin.