Transform your feet with Kate McLeod's The Foot File – a reusable glass foot buffer and callus remover. Transform your feet with Kate McLeod's The Foot File – a reusable glass foot buffer and callus remover. After discovering the healing benefits of raw cocoa butter from her sister-in-law, Kate McLeod became determined to find an easier way to apply it. As a former bakery owner and pastry chef, she brought the cocoa butter to her kitchen and blended it with a base of nourishing oils to create a smooth glide, then took the formula to a local sculptor who designed each bar into a stone shape that fits comfortably into the palm of a hand. The result? Kate McLeod's eponymous line of body stones that inspires a daily self-care practice in moisturizing from head to toe with natural, simple ingredients.