My Feet Are Cracking And Bleeding Why Can Anyone Give Me Suggestions?

Can anyone give me suggestions? - my feet are cracking and bleeding why

I usually wear flip-flops or sandals a lot, so my feet are very dry. When dry, in fact, that the heels are very bad cracks and bleeding. My toes and feet, because they feel like the skin is rubbed so bad .. I do not know why. I have in the healing foot cream, socks and wear them all day and night for extra moisture .. but still very painful! Any suggestion