Why do so many people say mineral oil is bad for leather?  Online, there are so many sites, none of which are actual chemists or experts, who go on about how bad mineral oil is for leather. But if mineral oil is fine for baby skin, surely it is good for leather as well. Johnson's baby oil is just perfumed mineral oil and has been used for decades.. Then people say 'petrolatum ( petroleum jelly) and petroleum products are bad for leather - we would not apply it on our skin and shou