Use lip balm on your heels to prevent new shoes from rubbing

Just bought new shoes or leather shoes and your heels get red and painful from the stiff edges, making every step feel like torture? Take out a regular 'oily lip balm' from your bag and apply a thick layer directly onto the skin of your heels where they tend to rub. Also, smear some on the inner hard edge of the shoe's heel counter. The oils in the lip balm instantly create a smooth protective film, significantly reducing friction between your skin and the shoe, so you won't get blisters even after walking all day!