What Do You Mean You Don't Wash Your Brushes?

I'm gonna just come out and say it. This is what you are putting on your face every time you use a dirty (already used-even just once) brush.

1)dead skin cells
2)bacteria
3)oil
4)dirt
5)old makeup
6)germs

All of the above can and will cause breakout and clog your pores. This can also lead to uneven texture of the skin...bumps, skin rash and irritation.
Your brushes should be thoroughly cleansed AT LEAST every two weeks. And what I mean by "thoroughly cleansed" is...use a cosmetic brush cleaner/brush bath. (Laura Mercier, Trish McEvoy, and Paula Dorf retail these products-these are some good ones.) OR Johnson & Johnson's baby shampoo. This is gentle on your delicate brush hairs and removes all yuckiness that I listed above. This is also the less expensive route.

Just shampoo each brush in warm water in the palm of your hand until the water runs clear. Make sure you don't get any water inside the area where the metal meets the wood/plastic part of the brush. (If too much water/soap gets in there, this will cause the brush to fall apart/warp easily).

Also, washing your brushes keeps the hairs from shedding onto your face when you apply makeup. Those loose hairs will most likely all wash down the drain. Bye bye!

Wash your brushes. No makeup will ever look good if your skin isn't healthy. Ever.