Envy Rx Serum When caring for your skin, do not forget that your feet should be cared for too. Unhealthy skin on your feet can result in blisters, corns or other blemishes. Vaseline and other lubricating skin products can help to prevent blisters. If you have naturally oily skin, you do not want to be buying products that are specially formulated for dry skin types. If you don't know your skin type, consult a skin care…