The complex tanning process of chromed tanned hide’s results in the fat liquoring and oils necessary to keep the hide soft and pliable being locked in and therefore there is no need to supplement them. Traditional type conditioner’s cannot penetrate the finished hide, but rather sit on the surface until they are removed by contact with clothing or evaporate. The same is true of most oil-based conditioners, but they may also have an adverse effect on polyurethane.
Water-based leather care products are able to permeate the finished leather or the polyurethane covering as its molecules are much smaller; oil has larger molecules than water and are unable to penetrate.
