Used once or twice a week, it should promote circulation and natural oil production to improve the condition of animal skin and give a healthy shiny coat. (idealhome.co.uk)
The problem is that it's really only found in animal skin and bones, hence the popularity of bone broth. (parsleyhealth.com)
The first socks were made from animal skins tied around the ankle and date back to around the 8th century BC. (thefashionablehousewife.com)