MINK OILMink have a thick fatty layer just below the skin. This fatty layer is recovered after the pelt is removed from the carcass and is then rendered down to make mink oil.
It is the closest known oil to human skin oil. In highly refined, purified form, it is used by many people for the treatment of skin problems such as psoriasis, eczema and acne. It penetrates quickly to the epidermis layer of the skin to help prevent fine lines and wrinkles, and also works as a natural sun screen.
Mink oil is also used to protect leather products, notably baseball gloves.
Further reading:
The efficacy of mink oil by Pureminkoil.com.