Cleaning our kit is essential if we want to keep it free of bacteria and grime. It seems pretty logical, yet according to a recent survey 22% of women don't bother. As everyday items, our brushes and sponges are frequently in contact not only with our skin, but its sebum, dust and spots. The result? A veritable hotbed of germs that can block our pores, zap our glow and leave us with blotches or acne. So regular cleaning is a sure-fire way to flawless skin. And that's not all: our makeup goes on and sets better if our toolkit is in good nick. How can we expect our pale pink eye shadow to look great if it was our smokey-eye tool of the choice the previous day?