White residue commonly forms on Horween shell cordovan leather if it has been neglected for too long. What to do? Keep reading, by Neptune’s trident!

This might be a little bit of a deep cut, but I imagine there have to be other people googling this from time to time, and when I took my Tangente Sport Index Datum out of an extended hibernation, I thought I would seize the opportunity to make a short video as it otherwise takes quite a while for this phenomenon to manifest itself.

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If you don’t want to watch the video, (and who can blame you, even though it’s under one minute in duration and gets right to the point) the answer is: the white residue is fat that “weeps” out of the leather if it has been left alone long enough. Environmental factors such as air pressure, humidity, temperature etc. I’m told can contribute to (i.e. expedite) the weeping as well.

The average person probably won’t hit this too often, unless you have certain watches or leather products you only wheel out for special / seldom occasions. I suspect that jewelry store clerks with sufficient slow moving inventory are more likely to run into it.

Not to worry though, this is a natural phenomenon and your strap does not need replacement.

The solution is to simply rub the straps between your fingers and massage the fat back into the leather. It only takes a moment and your unappetizing strap will swiftly transform before your eyes into back to its former supple and handsome appearance. Huzzah.